a. Complete the following cost schedule by computing marginal cost, average fixed cost, average variable cost, and average total cost. Instructions: Round your responses to the nearest whole number. Rate of Output Total Cost Marginal Cost Average Fixed Cost Average: Variable Cost Average Total Cost 0 $140 1 150 $ 10 $ 140 $ 10 2 170 S 70 $ 50 3 230 I $ 47 $ 31 4 380 5 670 b. At what output rate is average total cost minimized? units Cha