I need help writing an equation for this question. i would be very grateful for help. And if you do help thank you very much.
Recycled​ CDs, Incorporated, offers a choice of 5 used CDs for ​$2525​, with each additional CD costing ​$33. Write a cost function for purchasing 5 or more CDs. What will the cost of buying 1414 CDs​ be? Let x represent the number of CDs over 5.