HELP PLEASE.

f(8) = 21

Step-by-step explanation:

First, identify the equation of the line using the form: f(x) =mx + c, where m is the gradient and c is the y-intercept (the constant)

To find gradient, use the rise over run formula: (y2 - y1)/(x2 - x1)

You can use any points but I am going to use (2,3) and (3,6)

(6 - 3)/(3 - 2)

3/1 = 3      (gradient of the graph is 3)

Hence the equation is simplified to: f(x) = 3x + c

Now we need to find the value for c. To do this, you sub in any point, and I am going to use (3,6)

6 = 3*(3) + c   (rearrange it to make c on its own)

6 - 9 = c

c = -3

Hence the equation of the line is: f(x) = 3x - 3

So we are trying to figure out what f(8) equals. That means we sub in the value 8 where x is.

3*(8) - 3 = 21

f(8) = 21

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

12.5 feet

step-by-step explanation: