Jay's older sister, Sam, has a choice of two summer jobs. She can either work at a popular ice cream shop or at the local pool club. The ice cream shop would pay her to work 15 hours per week. She would make $8 per hour plus a 2% commission on her sales. At the pool club, Sam could earn $200 per week working 15 hours restocking clean towels. Sam wants to take the job that pays her the most. How much would Sam have to sell for the job at the ice cream shop to be the better choice for her summer job?