The cost of renting a boat consists of a flat fee plus a fixed price per hour. The table gives the total cost of renting a boat for 1 to 5 hours.

a. Write an expression for the total cost if the boat is rented for h hours.
b. Factor the expression that you wrote.
c. Use the expression to find the total cost for an 8-hour rental.

Hour Cost
1 $24
2 $28
3 $32
4 $36