The Bike Rental Shop charges $12
plus $9 an hour for renting a bike.
Darnell paid $57 to rent a bike. How
many hours did he pay to have the
bike checked out?
First we take the total of 57$ subtract the start rent price of 12, now we have 45, 45$ in hours we divide it by 9 for each hour, 45/9 the answer is 5.