The cost of a gym membership is a onetime fee of $140, plus a monthly fee of $40. Brendan wrote a $500 check to pay his gym membership for a certain number of months, including the onetime fee. How many months of membership did he pay for?

- 3
- 4
- 9
- 12
- 13

**The correct answer is C.**

After subtracting the onetime fee from the amount on Brendan’s check ($500 - $140), the remaining $360 goes toward the amount spent on monthly fees.

You can find the number of months of membership covered by the check by dividing the remaining $360 by the monthly fee of $40 per month, giving 9 months as the result.

You could also solve this problem by setting up and solving the equation:

Cost = Onetime Fee + (Monthly Fees) x Months

500 = 140 + 40m

40m = 500 - 140

40m = 360

m = 9