An auto-repair shop faces the following weekly costs: rent, $600; labor, $500 per worker; parts and supplies, $40 per repair. Each worker can repair 3 cars per week. Instructions: Round your answers to the nearest dollar. Leave no cells blank. Enter 0 if there is no associated cost. a. Fill in the costs in the table below. b. If the shop repairs 12 cars in a week, the total costs are $. c. If the shop repairs 0 cars in a week, the total costs are $.