Hello, Sarah,
I'll set the fee equal to F
1) To rent a canoe, you pay a one-time fee plus $8 per hour. Jill rented one for 3 hours and paid $49.
A) What is the fee?
Jill spent $49 for a 3 hour rental (at $8/hr) that included the fee, F.
$49 = 3*($8/hr) + F
F = $49 - 3*($8/hr)
F = $49 - $24
F = $25
B) How much would it cost for 5 hours?
The total, T, would be:
T = $25 + 5*($8/hr)
T = $65