A price-making firm is producing at the output level where average total cost equals $30, marginal revenue is $40, and the price is $50. If ATC is at its minimum level and the ATC curve is U-shaped, in order to maximize profits this firm should:

In the market for lock washers, a perfectly competitive market, the current equilibrium price is $5 per box. washer king, one of the many producers of washers, has a daily short-run total cost given by tc = 190 + 0.20q + 0.0025q2, where q measures boxes of washers. washer king's corresponding marginal cost is mc = 0.20 + 0.005q. how many boxes of washers should washer king produce per day to maximize profit?