when firms exit a perfectly competitive industry, the market supply curve shifts to the left quizlet

This fact has an important implication: over a wide range of output, the firm’s marginal cost curve is its supply curve. We shall see that the firm can maximize economic profit by applying the marginal decision rule and increasing output up to the point at which the marginal benefit of an additional unit of output is just equal to the marginal cost. Our goal in this section is to see how a firm in a perfectly competitive market determines its output level in the short run-a planning period in which at least one factor of production is fixed in quantity. Derive the firm’s supply curve from the firm’s marginal cost curve and the industry supply curve from the supply curves of individual firms.

Explain when a firm will shut down in the short run and when it will operate even if it is incurring economic losses.Show graphically how an individual firm in a perfectly competitive market can use total revenue and total cost curves or marginal revenue and marginal cost curves to determine the level of output that will maximize its economic profit.

When firms exit a perfectly competitive industry, the market supply curve shifts to the left quizlet