At equilibrium, quantity sold equals the quantity bought. This implies that
A) to sell more, producers require more in payment than consumers are willing to pay.
B) government regulation is necessary.
C) to sell less would require a lower price but would yield greater profit.
D) those who don't buy have been treated unfairly.
A
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Refer to the figure below. 
If Row Resorts keeps its rates high, then Column Cruises would receive the highest payoff if it:
A. offered reduced rates. B. kept its rates high. C. chose either strategy because it will have the same payoff in either case. D. agreed with Row Resorts to reduce their rates at exactly the same time.
If the price of hair styling increases, then
A) hair styling salons hire fewer workers but makes more profit. B) hair stylists demand an increase in wages and the salons hire fewer workers. C) the value of marginal product of each hair stylist increases and the demand curve for hair stylists shifts leftward. D) the value of marginal product of each hair stylist increases and the demand curve for hair stylists shifts rightward.
The efficient scale of the firm is the quantity of output that
a. maximizes marginal product. b. maximizes profit. c. minimizes average total cost. d. minimizes average variable cost.
If the calculated price elasticity of demand between two points is -1.5, demand is
A. inelastic. B. elastic. C. unit-elastic. D. unresponsive to price.