Answer:
(3,5)
Step-by-step explanation:
n(AUB)=(3)U(5)
=(3,5)
5 hours
The equation to solve this is 7.80h+35=74.
7.80 represents the cost per hour, h represents the number of hours, 35 is the reservation fee, and 74 represents the total money.
7.80h+35-35=74-35
7.80h=39
h=5