At time t = 0, water begins to drip out of a pipe
nto an empty bucket. After 56 minutes, 8 inches
of water are in the bucket. What linear function
n the form y = mx + b represents the amount of
water in inches, w, in the bucket after t minutes?

Answers

Answer 1

Step-by-step explanation:

w = t/7

at the beginning we 0 inches of water.

after 56 minutes we have 8 inches of water.

that is a ratio of 56 minutes / 8 inches = 7/1 = 1 / 1/7.

so, in 1 minute we get 1/7 inch of water.

in 2 minutes 2×1/7 = 2/7.

in 3 minutes 3×1/7 = 3/7.

...

hence the equation.

Answer 2

Answer:

y = t/7

Step-by-step explanation:

Given

Start time t = 0,Start level y = 0,Level of y = 8 in after t = 56 min

Solution

Find the value of m and b in the equation y = mx + b.

The value of b = 0, since there is no level in the bucket initially.

Find the value of m, the slope:

8 = 56m,m = 8/56m = 1/7

So the equation is:

y =  (1/7)t + 0

or

y = t/7

Related Questions

use the drop down menus for 5−4+7+1

Answers

Answer:

9

Step-by-step explanation:

5 - 4 + 7 + 1 = 9/1 = 9

PEMDAS. RULE U NEED TO USE IT!!!

I'm very stuck on this problem, mainly because of how restricted the selection of proofs is, and if you can help or give ideas I would really appreciate just listening to your thoughts on the question, thank you!

Answers

Check the picture below.

so in the parallelogram, the two triangles split by the side AC are congruents as you can see there by AAS, that means their sides and angles are congruent, that also includes the exterior angles.

since the exterior angles are also congruent, we can extend lines BC and AD as you see there in green and run an exterior angle at vertices A and C, since those two exterior angles are congruent and are also alternate interior ones, voila! it must be that BC || AD.

help plss

Write the description of each transformation in the order of operations.

Answers

Answer: PEMDAS

Parenthesis exponents multiplication Division addition subtraction

Step-by-step explanation:

solve (x+1) first then after just follow pemdas  

A blue rope is two times as long ad a red rope. A green rope is 8 times as long as the blue rope. If the total length of three ropes is 708.75 meters, what is the length of the blue rope?

Answers

Answer: b ≈ 74.605 meters

Step-by-step explanation:

    Let b be the length of the blue rope, r be the length of the red rope, and g be the length of the green rope. We will write different equations to show the situation given.

         b =  2r

         g = 8b

         b + r + g = 708.75 meters

    Next, we will substitute expressions into the last equation for the variables r and g so we can solve for b.

b + r + g = 708.75 meters

b + ([tex]\frac{b}{2}[/tex]) + (8b) = 708.75 meters

9.5b = 708.75 meters

b ≈ 74.61 meters

    b ≈ 74.605 meters


Trucks in a delivery fleet travel a mean of 130 miles per day with a standard deviation of 37 miles per day. The mileage per
normally Find the probability that a truck drives at least 63 miles in a day. Round your answer to four decimal places.

Hurry

Answers

The probability that a truck drives at least 63 miles in a day is 0.9649

How to find the required probability

The probability is solved using z scores, this measures the amount of standard deviation sample X is from mean.

the formula is below

z = (X - μ) / σ

Definition of variables

mean, μ = 130 miles per day

standard deviation, σ = 37 miles per day

X = 63 miles per day

score, z

substituting into the formula

=  (X - μ) / σ

= (63 - 130) / 37

= -1.81081 the p value for = 0.035085

the probability is calculated to be 1 - 0.035085 = 0.9649

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A spice mixture is 25% thyme. How many grams of thyme must be added to 12g of the mixture to increase the thyme content to 40%?

Answers

Answer:

  3 g

Step-by-step explanation:

You want to know the mass of thyme that must be added to 12 g of a spice mix that is 25% thyme in order to make it 40% thyme.

Setup

Let t represent the amount of added thyme (in grams). The amount of thyme in the augmented mix is ...

  0.25(12) + t = 0.40(12 +t)

Solution

Simplifying the equation gives ...

  3 +t = 4.8 +0.40t

  0.6t = 1.8 . . . . . . . . . subtract 0.40t +3

  t = 3 . . . . . . . . . . . divide by 0.6

3 grams of thyme must be added to the mix.

A firm makes circular drink mats , of radius 4.5cm , that are 3mm thick . They want to produce a rectangular box to hold a pile of 12 mats. What are the minimum dimensions of the box.

write answer and working out no spamming

Answers

Answer: The minimum is 13.5

Step-by-step explanation:

But if I got to multiply the 12 also it will be 162

A bell rings every 1/6 hour. Assuming it just rang, how many times will it ring in the next 2/3 hour?

Answers

Correct Answer:
4 times.

Explanation:
1/6 hour = 10 minutes
2/3 hour = 40 minutes
2/3 / 1/6 = 40/10 = 4 times

I would appreciate it if you mark my answer as brainliest.
Answer : 4 times

It is because 1/6 hour is 10 minutes and 2/3 hour is 40 minutes. So we have to divide 40 by 10. Thus we get the answer as 4 times.

The figure shows right triangle MPR on the coordinate plane. Line segment MQ is
a median of the triangle.

What are the coordinates of point Q? Explain your answer. Using the information in the figure, show that the length of the median MQ is half the length of the hypotenuse of MRP. Provide an argument supported by valid mathematical
reasoning and/or calculations.

Answers

Answer:

see explanation

Step-by-step explanation:

the median is a segment that goes from the vertex of a triangle to the midpoint of the opposite side.

Then Q is the midpoint of PR

given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint M is

M = ( [tex]\frac{x_{1}+x_{2} }{2}[/tex] , [tex]\frac{y_{1}+y_{2} }{2}[/tex] ) ← midpoint formula

use this formula to find the coordinates of Q

with (x₁, y₁ ) = R (0, 2b ) and (x₂, y₂ ) = P (2a, 0 )

Q = ( [tex]\frac{0+2a}{2}[/tex] , [tex]\frac{2b+0}{2}[/tex] ) = ( [tex]\frac{2a}{2}[/tex] , [tex]\frac{2b}{2}[/tex] ) = (a, b )

---------------------------------------------------

use the distance formula to find the lengths of median MQ and hypotenuse PR of Δ MRP

d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]

with (x₁, y₁ ) = M (0, 0 ) and (x₂, y₂ ) = Q (a, b )

MQ = [tex]\sqrt{(a-0)^2+(b-0)^2}[/tex] = [tex]\sqrt{a^2+b^2}[/tex]

repeat with (x₁, y₁ ) = P (2a, 0 ) and (x₂, y₂ ) = R (0, 2b )

PR = [tex]\sqrt{(0-2a)^2+(2b-0)^2}[/tex]

     = [tex]\sqrt{(-2a)^2+(2b)^2}[/tex]

     = [tex]\sqrt{4a^2+4b^2}[/tex]

     = [tex]\sqrt{4(a^2+b^2)}[/tex]

     = 2[tex]\sqrt{a^2+b^2}[/tex]

then MQ is half PR

Divide 2/3 by 8/15. Simplify your answer

Answers

Answer:

5/4

Step-by-step explanation:  

(2/3)/(8/15)

= (2/3)(15/8)

= (2*15)/(3*8)

= 30/24

= 5/4

The correct answer is:  " [tex]\frac{5}{4}[/tex] " ; {written as an improper fraction} ;

                                 or:  " 1.25 " ; {written as a decimal value} ;
                                 or:  " [tex]1\frac{1}{4}[/tex] " ;  {written as a mixed number fraction}.
__________________

Step-by-step explanation:

Given:   [tex]\frac{2}{3}[/tex] ÷ [tex]\frac{8}{15}[/tex] = ? {for which we shall solve}.

Note:  'Dividing by' a value; results in the same value as 'multiplying by' its reciprocal value [that is: 'multiplying by its inverted form'].

This is especially noteworthy in problems that involve 'dividing by fractions'.

So, to solve and simply our given problem:
[tex]\frac{2}{3} * \frac{15}{8}[/tex]  =  ? ;
Note:  The 2 cancels out to 1 ; and the 8 cancels out to 4 ;
         The 3 cancels out to 1 ; and the 15 cancels out to 5 ;
→ since:  {8 ÷ 4 =  2 } ;  &  {2 ÷ 2 = 1} ;
        and :

→ since:   {15 ÷ 3 = 5 } ;  & {3 ÷ 3 = 1 } .
______
We can rewrite our "further simplified" expression as:
→   [tex]\frac{1}{1}[/tex] * [tex]\frac{5}{4}[/tex]  ;

=  "  1 *   [tex]\frac{5}{4}[/tex]  " ;

=  "  [tex]\frac{5}{4}[/tex] " .

Further explanations:
1)  Note:  Re:  the "commutative property" of multiplication:
         " a * b = b * a " ;  or, write as:   " ab = ba " ;    
As such:      "  1  *   \frac{5}{4}  " ;  is the same as:
              ↔  "   [tex]\frac{5}{4}[/tex]  * 1 " .

2)  Note:  Re:  the identity property of multiplication:
 Any value, multiplied by "1", results in/ retains its same value}.  
As such;  our calculated value:
        "   [tex]\frac{5}{4}[/tex]   *  1  "   =    \frac{5}{4}  " .

3)  Note:  Re: the division of one (1) property of division:
Any value, divided by "1" ; results in that same initial value.
As such:  our calculated value:  " [tex]\frac{1}{1}[/tex]  = (1 ÷ 1) = 1 " ;

4)  Note:  Re:  the division by itself property of division:
Any value (except "0"), divided by itself, is equal to "1 " ;
As such:  our calculated value:  " [tex]\frac{1}{1}[/tex]  = (1 ÷ 1) = 1 " ;
______  

So, this answer—which is the most simplified, improper fraction—
is:
" [tex]\frac{5}{4}[/tex] " .

Or, to write as a mixed fraction:
   Use the mnemonic:

     [tex]\frac{n}{d}[/tex]  = M [tex]\frac{a}{d}[/tex] ;

That is: "numerator/denominator =  M( [tex]\frac{a}{d}[/tex] )"  ; {"M a/d" !} l

⇒ in which M is the [calculated singular whole number portion within the mixed number equivalent] ;
⇒ followed by " [tex]\frac{a}{d}[/tex] "  ; in which d is the same denominator as that of the improper fraction ;
⇒ & in which a is the calculated numerator value for the fraction portion for this number ;

So:  " \frac{5}{4}} "  =  (5 ÷ 4)  = 1.25 =   1 [tex]\frac{1}{4}[/tex]  " .
______

Long division method:
__________________________________________
              1 R 1 ; ⇒    1 + (1/4) ;  that is;  " 1 + (remainder) / (divisor)";
          4⟌5                                           →  1  +  ( 1 / 4)  ;
          −  4                                           =   "  1 [tex]\frac{1}{4}[/tex]  ".            
               1       ;               So, " [tex]1\frac{1}{4}[/tex]  " ;  as a mixed number fraction.

or:  Use a fraction calculator to convert improper fractions into mixed number fractions.

________________________
or:  Use a calculator:  " {5 ÷ 4} = 1.25 " .

____
The correct answer is:  " [tex]\frac{5}{4}[/tex] " ; {written as an improper fraction} ;

                                 or:  " 1.25 " ; {written as a decimal value} ;
                                 or:  "  [tex]1\frac{1}{4}[/tex]  " ;  {written as a mixed number fraction}.
____

Hope this answer is helpful!

Wishing you the best!

____

One month before a stock car race, the sale of ads for the official race program was slow. Only 24 pages, or just 40% of the available pages, had been sold. Find the total number of pages devoted to advertising in the program.

Answers

Answer: 60 pages

Step-by-step explanation: 24 pages time 2 would be 48 pages, which is 80% of the pages. Since 12 pages is 20%, you would add 12 pages, which equals 60 pages.

SOMEONE PLEASE HELPPPPPPPPPPPP!
Given: (GH) is a midsegment of ∆DEF. Show all work.
Find the value of x and y.
What is the length of (DF)?

Answers

In the given ΔDEF x is 17 units and y is 2 units.

What is a triangle?

A triangle is a three-sided closed-plane figure formed by joining three noncolinear points. Based on the side property triangles are of three types they are Equilateral triangle, Scalene triangle, and Isosceles triangle.

Given, GH is the midpoint of ΔDEF and EF is the base of the ΔDEF with a length of 28 units.

We know the midpoint of ΔDEF is (1/2) EF.

∴ GH = (28/2) = 14 units.

Now GH = x - 3.

14 = x - 3.

x = 17.

Given DH and FH are equal.

y + 8 = x - 7.

y + 8 = 17 - 7.

y + 8 = 10.

y = 2.

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1.3 x 10 to the power of negative 3

Answers

Answer:0.0013

Step-by-step explanation:

Answer: the answer is on  the calclulator

Step-by-step explanation:

Mrs.Josey and her family were taking a trip to Dallas to go to the Botanical Gardens.If the trip was a total of 350 miles one way and their car can go 20 miles on one gallon of gas, how many gallons will they need to make it to Dallas

Answers

The number of gallons of gas which Mrs. Josey and her family would need is; 17.5 gallons of gas.

How much gas is needed to make it to Dallas?

It follows from the task content that the quantity of gas in gallons needed by Mrs. Josey and her family to make it to Dallas is to be determined.

Therefore, since one gallon of gas is enough for 20 miles, It follows that the amount of gas required for 350 miles can be determined by proportion as follows;

20/1 = 350/x

x = 350 / 20

x = 17.5 gallons of gas.

Ultimately, the amount of gas needed for Mrs. Josey and her family to make it to Dallas is; 17.5 gallons of gas.

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Thomas has $10 to spend on lunch. He decides to buy come chicken sandwiches, which cost $2 each, and one container of orange juice, which cost $1.50. What is the greatest number of chicken sandwiches that Thomas can buy? ​

Answers

the answer is 3
Explanation: 10-1.50 is 8.5 and divide that by the cost
$10-$2= $8-$1.50= $6.50/2= 3 sandwiches and
^a sandwich ^ orange juice
have 50 cents of change
The most sandwiches he can buy is

Divide:
4⁄6 ÷ 2⁄6 =
..

Answers

Answer:2

Step-by-step explanation: I don’t have a explanation

Answer: 2

Step-by-step explanation:

You should be able to do this...

A construction worker earns an average bi-weekly net pay of $1,764.00. Which compound inequality correctly shows the amount of money, t, the worker can spend if the monthly budget for food is between 10% and 20%?

$176.40 ≤ t ≤ $352.80
$352.80 ≤ t ≤ $706.50
$382.20 ≤ t ≤ $764.40
$420.42 ≤ t ≤ $573.30

Answers

The compound inequality is $176.40 ≤ t ≤ $352.80 if a construction worker earns an average bi-weekly net pay of $1,764.00 option (A) Is correct.

What is inequality?

It is defined as the expression in mathematics in which both sides are not equal they have mathematical signs either less than or greater than known as inequality.

It is given that:

A construction worker earns an average bi-weekly net pay of $1,764.00.

= 10% of 1764

= (10/100)1764

= $176.4

= 20% of 1764

= (20/100)1764

= $352.8

Inequality will be: $176.40 ≤ t ≤ $352.80

Thus, the compound inequality is $176.40 ≤ t ≤ $352.80 if a construction worker earns an average bi-weekly net pay of $1,764.00 option (A) Is correct.

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Answer:

$382.20 ≤ t ≤ $764.40

Step-by-step explanation:

Hello, so first we would need to convert bi-weekly pay to monthly income.

First we would times $1,764.00 by 26

1764.00 × 26 = 45864

Then we would divide 45864 by 12

45864 ÷ 12 = 3822.

Then we calculate how much the worker can spend  if their monthly budget for food is in between 10% and 20%

3822 ×  10% = 382.20

3822 × 20% = 764.40

So, we can see the correct answer is $382.20 ≤ t ≤ $764.40.

Two identical rectangles linked at one corner are drawn on coordinate axes. Give the coordinates of point A and point B

Answers

The coordinates of the vertices of the points A and B are;

A(9, 7), B(15, 9)

What is the location of a point on the coordinate plane?

A point on the coordinate plane is described by a pair of points known as an ordered pair.

The coordinates of the vertices of the identical rectangles are; (3, 5), (9, 5), (9, 9)

The length of (9 5) from A is the same as the length from (9, 9) to A.

The coordinate of the point A is therefore;

x-coordinate = 9

y-coordinate = 5 + (9 - 5)/2 = 7

The coordinate of point A is (9, 7)

The length of the sides of the rectangle are;

Length = 9 - 3 = 6

Width = 9 - 7 = 2

The coordinates of the point B are;

x-coordinate = 9 + 6 = 15

y-coordinate = 9

The coordinates of the point B is (15, 9)

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i'm lost on this question can i please get someones help! thanks

Answers

Answer:

infinite

Step-by-step explanation:

I think it’s Infinite

If 10 students from a 1st-grade class are lining up to enter the cafeteria line for lunch, how many ways are there to line up the 10 students?

Answers

Answer: The answer is 10

Step-by-step explanation:

1. A candle weighs 300 grams (g). Each hour the candle is lit, it burns 4 g of its wax. a. Leth be the number of hours the candle burns. Write an equation that can be used to determine the number of hours it takes for the candle to weigh 206.4 g. b. Solve the equation to determine the number of hours it takes for the candle to weigh 206.4 g. Show your work.

Please help me tomorrow I Will hace a test about this question!!​

Answers

Answer:

Step-by-step explanation:

300 grams-24 hour= 276 so i think u just need to keep doing this till it gets to 206.4

The equation which represents the number of hours will be ln(206.4) = 1200ln(0.014).

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that a candle weighs 300 grams (g). Each hour the candle is lit, it burns 4 g of its wax. a. Leth be the number of hours the candle burns.

The equation for the number of hours will be calculated as,
[tex]h=300\times (0.014)^h[/tex]

lnh= 300 x ln(0.014)

Therefore, the equation which represents the number of hours will be ln(206.4) = 1200ln(0.014).

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Simplify:
a+b
a-b
[?]
a=5 and b=3

Answers

Simplification of the given expression ( a + b ) / ( a - b ) for the given values of a and b is equal to ( 4 / 1 ).

As given in the question,

Given expression:

( a + b ) / ( a - b )

Simplification of the given expression ( a + b ) / ( a - b ) for the value

a = 5 and b = 3 is given by,

( a + b ) / ( a - b ) we get,

( a + b ) / ( a - b )

= ( 5 + 3 ) / ( 5 - 3)

= ( 8 ) / ( 2 )

= ( 4 × 2 ) / ( 2 )

= ( 4 / 1 )

Therefore, simplification of the given expression ( a + b ) / ( a - b ) for the given values of a and b is equal to ( 4 / 1 ).

The complete question is:

Simplify the given expression:

(a + b)/ (a -b) = ?

For a=5 and b=3

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Pat and Fran are quality control specialists in a
light bulb factory. Pat inspects every 20 cartons
of bulbs for breakage. Fran inspects every 36
cartons for incorrect labeling. If they start at
the same time, which carton will be the first
that both of them inspect?

Answers

Answer:

Carton 180

Step-by-step explanation:

This is about the LCM of the numbers 20 and 36.

First find the prime factors of both numbers:

20 = 2*2*536 = 2*2*3*3

Now find the LCM:

LCM(20, 36) = 2*2*3*3*5 = 180

They will both inspect every 180 cartons.

Answer:

They will both inspect every 180 cartons.

Step-by-step explanation:

Firstly you could find the LCM of 20 and 36.

Multiples of 20 are: 20, 40, 60, 80, 100, 120, 140, 180, etc...

Multiples of 36 are: 36, 72, 108, 144, 180, 216, 252, 288, etc...

Therefore 180 is the answer, all they were asking was what was the LCM. Hope this helped you !!

Write the equation in slope-intercept form.
3x + 6y = 18
y =
=x + [

Answers

Answer:

Slope intercept form is achieved by isolating y to one side. 3x-6y=18: given. -6y=-3x+18: algebra. y=3/6x-3: simplifying.

a =? , b = 40 ft , C = 50 ft

Answers

Answer:

a = 30

Step-by-step explanation:

I am not exactly sure what the question is asking but if referring to right triangles, the Pythagorean theorem would work best.

Formula :

[tex]a^2 + b^2 = c^2\\\\[/tex]

Substitute values :

[tex]a^2 + 40^2 = 50^2\\a^2 + 1600 = 2500[/tex]

Solve for a:

[tex]a = \sqrt{2500 - 1600} \\a = 30[/tex]

** you could also use the 3:4:5 ratio

If 2 is added to a number and the sum is tripled, the result is 16 more than the number. Find the number.

Answers

Answer:

5

Step-by-step explanation:

5 + 2 = 7

7(3) = 21

_

5 + 16 = 21

The volume of 10,000 drops of a liquid is 10 fluid ounces.
What is the volume of 10 drops?

Answers

Answer: .01 fluid ounces.

Step-by-step explanation:

1,000 drops is 1 FL

100 drops is .1 FL

10 drops is .01 FL

**BRAINLEST**, **THANKS** AND **5 STARS** TO WHOEVER ANSWERS CORRECT FIRST! PLEASE HELP ME OUT THIS IS FOR ALGERBRA 2/PRE-CALCULUS

- During a certain time of year, the daily temperature in a certain city, in degrees Celsius follows a periodic pattern. The graph below shows the temperature over two days, where time t is measured in hours after 12:00 a.m. (midnight) on the first day.

- Write an equation for the graph below in terms of Y (temperature in degrees Celsius) and T (time in hours) to represent the given context.


- ANSWER SHOULD LOOK LIKE THIS FORMULA

y = ( a ) sin ( b ) (t - h) + k

- IF YOUR STILL UNCLEAR, THE SECOND SCREENSHOT IS WHAT THE ANSWER SHOULD LOOK LIKE
- (NO, THAT SECOND PHOTO WITH THE FORMULA ISNT THE ANSWER!!!!!)

GRAPH IS GIVEN BELOW PLEASE HELP ME OUT! ILL GIVE BRAINLIEST VOTE 5 STARS AND GIVE THANKS IF YOURE CORRECT AND FAST!!!! PLEASE HELP ME OUT

Answers

The sinusoidal equation for the graph in terms of Y, the temperature in degrees Celsius) and the time, T in hours is; Y = 3·sin((π/12)·(T + 6)) + 15

What is a sinusoidal equation?

A sinusoidal equation or function is an oscillating and periodic function that is based on the sine of an angle.

The required form of the response is y = a·sin(b·(t - h)) + k

The function of the graph is a sinusoidal function with the parts;

a = The amplitude

b = The frequency = 1/T

T = The period of the function

k = The vertical shift of the function

h = The horizontal shift of the function

From the graph, we have;

The minimum  point on the graph of the function = (1, 12)

The maximum point on the graph of the function = (13, 18)

The amplitude of the graph a is therefore; a = (18 - 12)÷2 = 3

The period of the graph = 1/b

1 cycle is completed in 24 hours, which indicates that the frequency of the function is; f = 2·π/24 = π/12 = b

The vertical shift, k from the parent function, y = sin(x) which is the distance the midline of the graph is raised above the x-axis is; k = 15

sin((π/12)·(0 - h)) = -1

((π/12)·(0 - h)) = -π/2

-h = 6

h = -6

The function, y = a·sin(b·(t - h)) + k, is therefore;

y = 3·sin((π/12)·(t + 6)) + 15

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Solve each given equation and show your work. Tell whether it has one solution, an infinite number of solutions, or no solutions, and identify each equation as an identity, a contradiction, or neither.
A) 6x + 4x - 6 + 24 + 9x
B) 25 - 4x = 15 - 3x +10 - x
C) 4x + 8 = 2x + 7 + 2x - 20

Answers

(i) The value of x is equal to 30 and the equation has one solution and it is neither identity nor contradiction.

(ii) This equation has infinite number of solutions and it is an identity.

(iii) This equation has no solutions and it is a contradiction.

What is identity and contradiction?

An identity is an equation that can be solved using any integer that can replace the variable in the equation in a meaningful way. A conditional equation is one that is met by some numbers but not by others, such as 2x = 4. A contradiction is an equation, such as x = x + 1, that cannot be solved.

We know that,

An equation having infinitely many solutions is called an identity equation.

An equation that having no solution is called a contradiction.

(i) 6x + 4x - 6 + 24 + 9x

Combining like terms

x = 30

Therefore, The value of x is equal to 30 and the equation has one solution and it is neither identity nor contradiction.

(ii) 25 - 4x = 15 - 3x +10 - x

Combining like terms

0 = 0

It means, The equation is true for all values of x.

Therefore, This equation has infinite number of solutions and it is an identity.

(iii) 4x + 8 = 2x + 7 + 2x - 20

Combining like terms

8 = -13

It means, The equation is not true for any value of x.

Therefore,  This equation has no solutions and it is a contradiction.

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Once an antibiotic is given, number of bacteria decreases at a rate of 15%/day. There were about 15,000 bacteria prior to the treatment. The graph models the number of bacteria after x days of treatment.

What are the key features of the exponential function modeled in terms of this situation and how can they be interpreted?

Select each correct answer.

The line y = 0 is an asymptote of the graph.

The x-intercept is 30.

The line x = 0 is an asymptote of the graph.

The asymptote indicates that there will never be more than 15,000 bacteria.

The y-intercept is 15,000.

The y-intercept represents the number of bacteria when treatment began.

The asymptote indicates that as time increases, the number of bacteria approaches 0.

Answers

The key features of the exponential function modeled in terms of this situation and how can they be interpreted are;

1) The y-intercept is 15,000.

2) The y-intercept represents the number of bacteria when treatment began.

3) The asymptote indicates that as time increases, the number of bacteria approaches 0.

What are the key features of the exponential function Graph?

The general formula for an exponential function is;

y = aˣ

Now, an asymptote of a curve is defined as a line that exists in a way that the distance that exists between the curve and the line approaches zero as either one or both of the x or y coordinates approaches to infinity.

From the given graph, we can say that the y-intercept which is where the curve intersects the y-axis is 15,000 and this indicates the number of bacteria that existed prior to treatment.

The asymptote of the graph would likely be around x = 1 and it indicates that as time increases, the number of bacteria approaches 0.

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