Perfectly competitive firms will react to profits in the long run by _______ production.

Explain with diagrams how a perfectly competitive industry will respond at both the industry and firm levels to a fall in wages in both the short run and the long run.

Only typed answer

If there were 10 firms in this market, the short-run equilibrium price of steel would be $______per ton. At that price, firms in this industry would ______(shut down/operate at a loss/ earn a positive profit/ earn zero profit).  Therefore, in the long run, firms would__________(enter/ exit/ neither enter nor exit) the steel market. Because you know that competitive firms earn______(zero/ negative/ positive) economic profit in the long run, you know the long-run equilibrium price must be $_____per ton. From the graph, you can see that this means there will be_____(10/20/30) firms operating in the steel industry in long-run equilibrium.