Leticia charges $8 per hour to babysit. she babysat friday night for 4 hours, and then she babysat again on saturday. she earned a total of $72. how many hours did leticia babysit on saturday? choose two answers: one for the equation that models this situation and one for the correct answer.

First, we have to look at the equation that models this situation. We learn that the price per hour of babysitting is $8. On Friday, Leticia babysat for 4 hours, and on Saturday, she babysat an unknown amount of time. In total, she earned $72. Therefore:

8 ( 4 + x ) = 72

( 4 + x ) = 72 / 8

4 + x = 9

x = 9 - 4

x = 5

Leticia babysat 5 hours on Saturday.