In long run equilibrium, economic profits tend to zero in a perfectly competitive market and also in a monopolistically competitive market. This is true because both market structures share a crucial characteristic. What is the characteristic that causes economic profits to get pushed towards zero in both perfect competition and monopolistic competition

The following table shows the daily cost data and demand schedule for a typical firm producing board games in a monopolistically competitive market in the short run.

Suppose that a firm produces polo shirts in a monopolistically competitive market. The following graph shows its demand curve, marginal revenue (MR) curve, marginal cost (MC) curve, and average total cost (ATC) curve. Place a black point (plus symbol) on the graph to indicate the long-run monopolistically competitive equilibrium price and quantity for this firm. Next, place a grey point (star symbol) to indicate the minimum average total cost the firm faces and the quantity associated with that cost PRICE (Dollars per shirt) 0 10 20 True O False MR Demand 60 QUANTITY (Thousands of shirts) ATC 40 BO 190 100 Mon Comp Outcorne Because this market is a monopolistically competitive market, you can tell that it is in long-run equilibrium by the fact that optimal quantity for each firm. Furthermore, the quantity the firm produces in long-run equilibrium is Min Unit Cost True or False: This indicates that there is a markup on marginal cost in the market for shirts. at the the efficient scale.

Suppose that a firm produces wool jackets in a monopolistically competitive market. The following graph shows its demand curve (D), marginal revenue curve (MR), marginal cost curve (MC), and long-run average cost curve (LRAC). Assume that all firms in the industry face the same cost structure. Place the tan point (dash symbol) on the graph to indicate the long-run monopolistically competitive equilibrium price and quantity for this firm. Next, place the purple point (diamond symbol) to indicate the point at which this firm would produce in the long run if it operated in a perfectly competitive market. Note: Dashed drop lines will automatically extend to both axes. (?) 100 90 Monopolistic Competition Outcome 80 70 60 Perfect Competition Outcome LRAC 50 40 30 20 10 MC MR 10 20 30 40 50 60 70 80 90 100 QUANTITY (Thousands of jackets per month) PRICE, COSTS, AND REVENUE (Dollars per jacket)