Question

Before he started washing windows on weekends, Rob had $20. He earned $60 over each of the first three weekends that he spent washing windows. So far, Rob has not spent any of his money.

If n represents a whole number less than or equal to 3, which function shows the total amount of money Rob had after n weekends of washing windows?


answer choices

A. t(n) = 20 + 60n

B. t(n) = 60 + 20n

C. t(n) = 200n

D. t(n) = 200

Answer 1

A. t(n) = 20 + 60n

Explanation:

Since Rob already had $20, the equation should have +20 to represent the money he already had.

60n can represent how much money Rob gets after washing windows, since he earned $60 from each weekend he washed windows.

So, A is the correct answer, t(n) = 20 + 60n