An auto-repair shop faces the following weekly costs: rent, $600; labour, $500 per worker; parts and supplies, $50 per repair. Each worker can repair 4 cars per week. Instructions: Round your answers to the nearest dollar. Leave no cells blank. Enter O if there is no associated cost. a. Fill in the costs in the table below. b. If the shop repairs 16 cars in a week, the total costs are $ 3400 c. If the shop repairs O cars in a week, the total costs are $ 600 Quantity of repairs Variable costs ($) Total costs ($) 0 0 600 700 1300 8 1400 2000 12 2100 2700 16 2800 3400 20 3500 4100 24 4200 4800 28 4900 5500 32 5600 6200