Respuesta :
Answer:
5 Hours
Step-by-step explanation:
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.
The answer is: 5. since 57-12 is 45. Now you are left with how much he paid hourly. 45 divided by 9 is 5.