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2. If the short-run marginal and average variable cost curves for a competitive firm are given by SMC = 2 + 40 and AVC = 2 + 20, how many units of output will it produce at a market price of 0? At what level of fixed cost will this firm earn zero economic profit? (LO3) 13. A firm in a competitive industry has a total cost function of TC = 0.202 50 + 30, whose corresponding marginal cost curve is MC = 0.40 - 5. If the firm faces a price of 6, what quantity should it sell? What profit does the firm make at this price? Should the firm shut down? (LO3) MacBook Air