FRQ: Perfect Competition
完全竞争
完全竞争市场的短期和长期均衡、企业决策的FRQ专项练习
Question 1 (5 points)
Draw a correctly labeled graph for a perfectly competitive firm in short-run equilibrium earning positive economic profit. Show the profit-maximizing quantity (Q*), price (P*), and ATC at Q*. Shade the area of economic profit.
Type: Graph Drawing
Suggested time: 8 minutes
Suggested time: 8 minutes
Question 2 (6 points)
A perfectly competitive firm has MC = 2Q + 1, and the market price is $11. (a) Find the profit-maximizing output. (b) If ATC = Q + 3 at this output, calculate economic profit. (c) What will happen in the long run? Explain.
Type: Calculation + Explanation
Suggested time: 9 minutes
Suggested time: 9 minutes
Question 3 (6 points)
Draw side-by-side graphs of a perfectly competitive market and a representative firm. Show the long-run equilibrium. Then show the effect of an increase in demand. Label the short-run and long-run adjustments.
Type: Graph Drawing
Suggested time: 9 minutes
Suggested time: 9 minutes
答题提示
- 图表题：确保正确标注坐标轴、曲线和关键点
- 计算题：写出完整计算过程，标明最终答案
- 解释题：先陈述结论，再用经济学原理解释
- AP考试FRQ每题约7分钟