Sally rents a life jacket for a one-time fee of $5. She then rents a canoe for $15 per hour. Which expression represents the total cost, in dollars, to rent the life jacket and the canoe for h hours?
A 5+15h
B 10
15 + 5
20h

I think it's 20h

Explanation: You add the money then multiply it by the hours. B wouldn't make any sense, A would only be multiplying th hours by $15 but the life jacket needs to as well, and 15+5 isn't multiplying the hours so the only logical answer would be 20h.