Question

Saved $500 from his summer job so he would have spending money during the school year. He withdraws $12 from his account each week so a linear function models his plan. Mellissa made a similar plan. Compare the transactions

Answer 1

See Explanation

Explanation:

Given

`Savings = \$500`

`Withdrawal = \$12` weekly

Required

The question is incomplete as the linear function or table or graph of Melissa's plan is not given.

The available details can only be used to solve the function of the given individual

Let the number of weeks be w.

So: the amount left in w weeks is:

`Amount = Savings - Withdrawal * w`

`Amount = 500- 12* w`

`Amount = 500- 12w`

Represent as a function

`f(w)= 500- 12w`

To solve the amount left at the end of a certain week (say week 5), simply substitute 5 for w in
`f(w)= 500- 12w`

`f(5) = 500 - 12 * 5`

`f(5) = 440`