Story Problem Help.
A hospital parking lot charges ?$2.50 for the first hour or part? thereof, and ?$1.25 for each additional hour or part thereof. A weekly pass costs ?$39.00 and allows unlimited parking for 7 days. If each visit Jonny makes to the hospital lasts three and a half? hours, what is the minimum number of visits for which buying a pass would be less expensive than paying each? time?