Whenever a perfectly competitive firm chooses to change its level of output, its marginal revenue
A. increases if MR < ATC and decreases if MR > ATC.
B. does not change.
C. always increases.
D. always decreases.
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Suppose that in a competitive market the equilibrium price is $2.50. What is marginal revenue for the last unit sold by the typical firm in this market?
A. Less than $2.50
B. More than $2.50
C. Exactly $2.50
D. The marginal revenue cannot be determined without knowing the actual quantity sold by the typical firm.
When profit-maximizing firms in competitive markets are earning profits,
A. market demand must exceed market supply at the market equilibrium price.
B. market supply must exceed market demand at the market equilibrium price.
C. new firms will enter the market.
D. the most inefficient firms will be encouraged to leave the market.
The accountants hired by Forever Fitness have determined total fixed cost to be $75,000, total variable cost to be $130,000, and total revenue to be $125,000. Because of this information, in the short run, Forever Fitness should
A. shut down because staying open would be more expensive.
B. lower their prices to increase their profits.
C. stay open because shutting down would be more expensive.
D. stay open because the firm is making an economic profit.
In a competitive market the price is $8. A typical firm in the market has ATC = $6, AVC = $5, and MC = $8. How much economic profit is the firm earning in the short run?
A. $0 per unit
B. $1 per unit
C. $2 per unit
D. $3 per unit
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