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AP Microeconomics Prd 3 B B Explain Using Graphs Where Appropriate Equilibrium Firm Decision Making Consumer Surplus Producer Surplus Topic 4 4 Questions

Analyze differentiated firms from short-run output and profit through long-run entry, advertising, excess capacity, and allocative and productive inefficiency.

Syllabus
Effective Fall 2026
Course
AP Microeconomics

Exam points

  • identify monopolistic competition from many firms, differentiated products and low barriers to entry and exit
  • connect product differentiation and close substitutes to downward-sloping demand, market power and elasticity
  • explain how advertising seeks to differentiate a product and make the firm's demand less elastic
  • select short-run output at MR = MC, read price from demand and calculate economic profit or loss
  • apply the short-run shutdown rule and predict exit when a firm's loss persists
  • trace entry into demand shifting left and becoming more elastic until long-run economic profit is zero
  • draw long-run equilibrium with demand tangent to ATC, MR = MC, P = ATC and P greater than MC
  • identify excess capacity and productive inefficiency because output is below the ATC-minimising quantity
  • explain allocative inefficiency from P greater than MC and marginal benefit exceeding marginal cost
  • compare long-run monopolistic competition with perfect competition using price, MR, MC, ATC and efficiency
  • locate the total-revenue-maximising output where marginal revenue equals zero

AP Microeconomics Prd 3 B B Explain Using Graphs Where Appropriate Equilibrium Firm Decision Making Consumer Surplus Producer Surplus Topic 4 4 Questions question 1

[Maximum number: 1]

The table below shows the total cost and total benefit of advertisements placed by AZY Foods, a firm in the retail food market.

Table for Question AP Microeconomics Prd 3 B B Explain Using Graphs Where Appropriate Equilibrium Firm Decision Making Consumer Surplus Producer Surplus Topic 4 4 Questions question 1 — AP Microeconomics

There are many firms in the retail food market. Each firm places its own firm-specific advertisements without considering the actions of its competitors. In what market structure is AZY Foods operating?

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