The demand curve for guitars is given by Pd = 200 - 5Qd and supply for guitars is given by Ps = 20 + Qs. What is total surplus at equilibrium? 2,700 2,250 450 5,400 Suppose that a firm in a competitive industry has the following cost functions: Total Cost: TC = 100 + q2 Marginal Cost: MC = 2q If the price of the good is $200, what is the firm's profit in the short-run equilibrium? 6400 1000 3200 9900

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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The demand curve for guitars is given by Pd = 200 - 5Qd and supply for guitars is given by Ps = 20 + Qs. What is total surplus at
equilibrium?
2,700
2,250
450
5,400
Suppose that a firm in a competitive industry has the following cost functions:
Total Cost: TC = 100 + q²
Marginal Cost: MC = 2q
If the price of the good is $200, what is the firm's profit in the short-run equilibrium?
6400
1000
3200
9900
Transcribed Image Text:The demand curve for guitars is given by Pd = 200 - 5Qd and supply for guitars is given by Ps = 20 + Qs. What is total surplus at equilibrium? 2,700 2,250 450 5,400 Suppose that a firm in a competitive industry has the following cost functions: Total Cost: TC = 100 + q² Marginal Cost: MC = 2q If the price of the good is $200, what is the firm's profit in the short-run equilibrium? 6400 1000 3200 9900
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