Omar mows lawns for $9.25 per hour. He spends $7.50 on gas for the mower. How much does he make if h

Omar mows lawns for $9.25 per hour. He spends $7.50 on gas for the mower. How much does he make if he works h hours?

We have the following profit equation:
Profit = Revenue - Cost:

Revenue = Hourly rate * number of hours
9.25h - 7.50