At the lake, it costs $9 per hour to rent a paddleboat, but you receive a $5 discount. It costs $6.50 per hour to rent a kayak. After how many hours would it cost more to rent a paddleboat than a kayak?
In _______ hours it would cost more to rent a paddleboat than to rent a kayak.
(Start with the constant when solving, and just give me the inequality!)