8. Mr. Rogers recycles his plastic bottles every month to save for his vacation to Lake Tahoe. He gets $30 per month and he already had $203 that he received for his birthday.
a.
What is the rate of change for this problem in context:
b.
Write an equation that models the situation:
c.
Find f(15). Explain what the answer means.

answer: b.48 for

step-by-step explanation:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

idk

step-by-step explanation: