The fine schedule for overdue books at the county library is modeled by the values in the table. Library Fines for Overdue Books Days overdue Amount of fine 0 0 ¢ 2 5 ¢ 4 10 ¢ 6 15 ¢ 8 20 ¢ 10 25 ¢ Which equation best models the fine schedule for overdue books? y = five-halves x, where x is the cost in cents for a book that is y days overdue y = five-halves x, where y is the cost in cents for a book that is x days overdue y = 5 x, where x is the cost in cents for a book that is y days overdue y = 5 x, where y is the cost in cents for a book that is x days overdue