Answer:
The cost to rent a trailer for 2.9 hours is $27.2.
The cost to rent a trailer for 3 hours is $28.
The cost to rent a trailer for 8.5 hours is $72.
The cost to rent a trailer for 9 hours is $76.
Step-by-step explanation:
It is given that the charge to rent a trailer is $20 for up to 2 hours plus $8 per additional hour or portion of an hour.
Let x be the number of hours.
The cost to rent a trailer for x hours is defined as
For x>2,
Substitute x=2.9 in the cost function.
The cost to rent a trailer for 2.9 hours is $27.2.
Substitute x=3 in the cost function.
The cost to rent a trailer for 3 hours is $28.
Substitute x=8.5 in the cost function.
The cost to rent a trailer for 8.5 hours is $72.
Substitute x=9 in the cost function.
The cost to rent a trailer for 9 hours is $76.
All ordered pairs, in the form of (hours, cost) are (2.9, 27.2), (3,28), (8.5, 72) and (9,76).
The graph of all ordered pairs is shown below.
