Please help I'm confused
Phone Case Heaven is a store that sells phone cases and accessories at great low prices! The cost of buying c phone cases at x dollars per case and p pop sockets at y dollars each is represented by T=cx+py, where T is the total cost.

Suppose you have $24 and you plan to buy 2 pop sockets at $2.00 each. Which equation represents the number of phone cases you can buy if each phone case costs $4.50?