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Suppose a firm in a competitive market earned $1,000 in total revenue and had a marginal revenue of $10 for the last unit produced and sold.What is the average revenue per unit,and how many units were sold?


A) $5 and 50 units
B) $5 and 100 units
C) $10 and 50 units
D) $10 and 100 units

E) B) and C)
F) A) and D)

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A profit-maximizing firm in a competitive market will increase production when average revenue exceeds marginal cost.

A) True
B) False

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Suppose the long-run supply curve for a good is upward-sloping.The upward slope could be explained by


A) increases in production costs resulting from more firms coming into the market.
B) a breakdown of the "free entry and exit" feature of competition.
C) a breakdown of the "price taking" feature of competition.
D) a stable demand curve for the good,that is,a demand curve that never shifts.

E) All of the above
F) A) and C)

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In a certain market there are many buyers and many sellers.It is easy to distinguish the product sold by one firm from the products sold by other firms.Is the market competitive?

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The market is not competitive ...

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Comparing marginal revenue to marginal cost (i) Reveals the contribution of the last unit of production to total profit. (ii) Is helpful in making profit-maximizing production decisions. (iii) Tells a firm whether its fixed costs are too high.


A) (i) only
B) (i) and (ii) only
C) (ii) and (iii) only
D) (i) and (iii) only

E) B) and C)
F) A) and B)

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A firm in a competitive market currently produces and sells 500 doorknobs for a price of $10 per doorknob.Which of the following events would decrease the firm's average revenue?


A) The firm increases its output above 500 doorknobs.
B) The firm decreases its output below 500 doorknobs.
C) The market price of doorknobs rises above $10.
D) The market price of doorknobs falls below $10.

E) None of the above
F) B) and C)

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Figure 14-14 Figure 14-14     -Refer to Figure 14-14.Assume that the market starts in equilibrium at point A in panel (b) .An increase in demand from D0 to D1 will result in A)  a new market equilibrium at point D. B)  an eventual increase in the number of firms in the market and a new long-run equilibrium at point C. C)  rising prices and falling profits for existing firms in the market. D)  falling prices and falling profits for existing firms in the market. Figure 14-14     -Refer to Figure 14-14.Assume that the market starts in equilibrium at point A in panel (b) .An increase in demand from D0 to D1 will result in A)  a new market equilibrium at point D. B)  an eventual increase in the number of firms in the market and a new long-run equilibrium at point C. C)  rising prices and falling profits for existing firms in the market. D)  falling prices and falling profits for existing firms in the market. -Refer to Figure 14-14.Assume that the market starts in equilibrium at point A in panel (b) .An increase in demand from D0 to D1 will result in


A) a new market equilibrium at point D.
B) an eventual increase in the number of firms in the market and a new long-run equilibrium at point C.
C) rising prices and falling profits for existing firms in the market.
D) falling prices and falling profits for existing firms in the market.

E) A) and D)
F) C) and D)

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The long-run equilibrium in a competitive market characterized by firms with identical costs is generally characterized by firms operating at efficient scale.

A) True
B) False

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If a firm operating in a competitive industry shuts down in the short run,it can avoid paying


A) fixed costs.
B) variable costs.
C) total costs.
D) The firm must pay all its costs,even if it shuts down.

E) A) and C)
F) None of the above

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Suppose a firm in a competitive market produces and sells 150 units of output and earns $1,800 in total revenue from the sales.If the firm increases its output to 200 units,total revenue will be


A) $2,000.
B) $2,400.
C) $4,200.
D) We do not have enough information to answer the question.

E) None of the above
F) B) and D)

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If a firm can influence the market price of the good it sells,then it is said to have __________.

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Which of the following firms is the closest to being a perfectly competitive firm?


A) a hot dog vendor in New York
B) Microsoft Corporation
C) Ford Motor Company
D) the campus bookstore

E) A) and D)
F) A) and C)

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Table 14-11 Suppose that a firm in a competitive market faces the following prices and costs: Table 14-11 Suppose that a firm in a competitive market faces the following prices and costs:    -Refer to Table 14-11.If the firm is producing 2 units of output,it should A)  produce more units of output because its marginal revenue is greater than its marginal cost. B)  fewer units of output because its marginal revenue is less than its marginal cost. C)  produce more units of output because its marginal revenue is less than its marginal cost. D)  produce fewer units of output because its marginal revenue is greater than its marginal cost. -Refer to Table 14-11.If the firm is producing 2 units of output,it should


A) produce more units of output because its marginal revenue is greater than its marginal cost.
B) fewer units of output because its marginal revenue is less than its marginal cost.
C) produce more units of output because its marginal revenue is less than its marginal cost.
D) produce fewer units of output because its marginal revenue is greater than its marginal cost.

E) A) and B)
F) C) and D)

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Figure 14-11 Figure 14-11   -Refer to Figure 14-11.The figure above is for a firm operating in a competitive industry.If there were eight identical firms in the industry,which of the following price-quantity combinations would be on the market supply curve?    A)  A only B)  A and C only C)  B only D)  B and D only -Refer to Figure 14-11.The figure above is for a firm operating in a competitive industry.If there were eight identical firms in the industry,which of the following price-quantity combinations would be on the market supply curve? Figure 14-11   -Refer to Figure 14-11.The figure above is for a firm operating in a competitive industry.If there were eight identical firms in the industry,which of the following price-quantity combinations would be on the market supply curve?    A)  A only B)  A and C only C)  B only D)  B and D only


A) A only
B) A and C only
C) B only
D) B and D only

E) A) and B)
F) A) and C)

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Table 14-2 The table represents a demand curve faced by a firm in a competitive market. Table 14-2 The table represents a demand curve faced by a firm in a competitive market.    -Refer to Table 14-2.For a firm operating in a competitive market,the average revenue from selling 3 units is A)  $12. B)  $4. C)  $3. D)  $1.25. -Refer to Table 14-2.For a firm operating in a competitive market,the average revenue from selling 3 units is


A) $12.
B) $4.
C) $3.
D) $1.25.

E) All of the above
F) B) and C)

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Which of the following industries is most likely to exhibit the characteristic of free entry?


A) nuclear power
B) municipal water and sewer
C) dairy farming
D) airport security

E) All of the above
F) C) and D)

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Figure 14-1 Suppose that a firm in a competitive market has the following cost curves: Figure 14-1 Suppose that a firm in a competitive market has the following cost curves:   -Refer to Figure 14-1.If the market price is $5.00,the firm will earn A)  positive economic profits in the short run. B)  negative economic profits in the short run but remain in business. C)  negative economic profits and shut down. D)  zero economic profits in the short run. -Refer to Figure 14-1.If the market price is $5.00,the firm will earn


A) positive economic profits in the short run.
B) negative economic profits in the short run but remain in business.
C) negative economic profits and shut down.
D) zero economic profits in the short run.

E) A) and D)
F) B) and D)

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A competitive firm currently produces and sells 500 units of output.Its total revenue is $6,000;the marginal cost of producing the 500th unit of output is $14.50;and the average total cost of producing the 500th unit of output is $9.50.Is the firm maximizing its profit,or should it increase or decrease output in order to increase its profit?

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For this firm,price = marginal...

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Table 14-7 Suppose that a firm in a competitive market faces the following revenues and costs: Table 14-7 Suppose that a firm in a competitive market faces the following revenues and costs:    -Refer to Table 14-7.If the firm is maximizing profit,how much profit is it earning? A)  $0 B)  $1 C)  $10 D)  There is insufficient data to determine the firm's profit. -Refer to Table 14-7.If the firm is maximizing profit,how much profit is it earning?


A) $0
B) $1
C) $10
D) There is insufficient data to determine the firm's profit.

E) C) and D)
F) All of the above

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When buyers in a competitive market take the selling price as given,they are said to be


A) market entrants.
B) monopolists.
C) free riders.
D) price takers.

E) B) and C)
F) All of the above

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