Tools of the Trade rental shop will rent a pressure washer for $\$35$ for the first two hours, and $\$5$ for each additional hour, up to a total of $8$ hours. After this, you will pay the full-day price for $24$ hours, which costs $\$65\text{.}$ Note: You cannot pay for a partial hour. If you keep the washer $3$ hours and $1$ minute, you will be charged for $4$ full hours. If you rented the washer at $9{:}15$ a.m. and returned it at $3{:}45$ on the same day, what would you owe? Answer: ? dollars hours