Question

Philip borrowed $50 from his parents. He paid $20 back to his parents at the end of the

week and agreed to pay back $4 each week thereafter. The function f(x) = 4x + 20
models the total amount of money Philip has paid back his parents x weeks after he paid
back the initial $20. How much money does Philip still owe his parents after 3 weeks?

Answer 1

18$

Explanation:

Answer 2

Answer: $18

Explanation:

20 already paid back upfront, $4 each week, 3 weeks have passed so its 4x3 which is $12. 20 + 12 = 32; 50 - 32 = 18