A moving truck rental help please

Question

A moving truck rental company charges $20.95 to rent a truck, plus $0.89 per mile. Suppose the function C(d) gives the total cost of renting the truck for one day if you drive 69 miles.

Give the total rental cost if you drive the truck 69 miles. Give the function notation in the first box, the answer in the second box, and choose the correct units from the third box.

Answer 1

C(d) = 20.95 + .89d

C(69) = 20.95+ .89(69) = 20.95+61.41

= $82.36 = total cost for 69 miles