4. Firm's Costs Your cousin Vinnie owns a painting company with fixed costs of $200 and the following schedule for variable costs: Quantity Variable Cost Average Fixed Cost Average Variable Cost Average Total Cost (Houses Painted per Month) ( Dollars) ( Dollars) (Dollars) (Dollars) 1 10 2 20 3 40 4 80 160 1.1.1.1.1 6 320 sJ 640 The efficient scale is houses