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When some resources used in production are only available in limited quantities, it is likely that the long-run supply curve in a competitive market is:


A) upward-sloping
B) vertical
C) downward-sloping
D) horizontal

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

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When a new firm decides to enter a perfectly competitive market:


A) the short-run market supply curve shifts right
B) demand will rise
C) the short-run market supply curve shifts left
D) existing firms will force prices to increase

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

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Suppose a profit-maximising firm in a competitive market is unable to generate enough revenue to pay all of its fixed costs. In the short run it should:


A) shut down and incur the total loss of its fixed cost
B) continue to produce as long as marginal cost is less than average revenue
C) continue to produce as long as revenue is sufficient to pay variable costs
D) continue to produce and lower its price to gain more market share

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

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Suppose a firm in a perfectly competitive market doubles its sales. This means that the firm's total revenue will:


A) decrease because prices will fall
B) exactly double
C) increase by more than double because prices will rise
D) This cannot be determined without data on the firm's costs

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

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Which of the following are true of comparing marginal revenue to marginal cost? (i) it reveals the contribution of the last unit of production to total profit (ii) it is helpful in making profit-maximising production decisions (iii) it always reveals whether a firm is making an economic profit (iv) it tells a firm whether its fixed costs are too high


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

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

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If identical firms that remain in a competitive market over the long run make zero economic profit, why do these firms choose to remain in the market?

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Because a normal rate of return on their...

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A miniature golf course is a good example of where fixed costs become relevant to the decision of when to open and when to close for the season.

A) True
B) False

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


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

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

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Lee had invested $100 000 in a risk-free unit trust, on which she earned $10 000 each year. She used that money to buy a prawn farm. She also quit her job as a salesperson to devote all of her time to her prawn business. Her salary as a salesperson was $25 000 per year. -According to the information provided, at the end of the first year of operating her new business, Lee's accountant reported an accounting profit of $50 000. What was Lee's economic profit?


A) $15 000 profit
B) $25 000 profit
C) $40 000 profit
D) $50 000 profit

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

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For a firm in a perfectly competitive market, the price of the good is always equal to:


A) marginal revenue
B) average revenue
C) equilibrium market price.
D) all of the above

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

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In a competitive market, the actions of any single buyer or seller will have a negligible impact on the market price.

A) True
B) False

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Suppose a firm in a competitive market increase its output by 25 per cent, the price of its output is likely to:


A) decrease by more than 25 per cent
B) increase by more than 25 per cent
C) remain unchanged
D) this cannot be determined without information on the firm's costs

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

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Firms that shut down in the short run are unable to avoid their:


A) fixed costs
B) intermediate costs
C) variable costs
D) marginal cost

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

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When a profit-maximising firm's fixed costs are considered sunk in the short run, it:


A) can safely ignore fixed costs when deciding how much to produce
B) will never show losses
C) can set its price above marginal cost
D) maximises profit by choosing an output level where price exceeds marginal cost

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

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Graph 14-9 Graph 14-9    -Refer to Graph 14-9. When a firm in a competitive market, like the one depicted in panel (a) , observes market price rising from P<sub>1</sub> to P<sub>2</sub>, it is most likely the result of: A)  an increase in market supply from Supply<sub>0</sub> to Supply<sub>1</sub> B)  an increase in market demand from Demand<sub>0</sub> to Demand<sub>1</sub> C)  entrance of new firms into the market D)  the exit of existing firms in the market -Refer to Graph 14-9. When a firm in a competitive market, like the one depicted in panel (a) , observes market price rising from P1 to P2, it is most likely the result of:


A) an increase in market supply from Supply0 to Supply1
B) an increase in market demand from Demand0 to Demand1
C) entrance of new firms into the market
D) the exit of existing firms in the market

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

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Firms in competitive markets are said to be price takers.

A) True
B) False

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Table 14-2 The price of each David Butterfly a butterfly farmer in Greytown sells is: Table 14-2 The price of each David Butterfly a butterfly farmer in Greytown sells is:    -Refer to Table 14-2. If the firm doubles its output from three to six units, total revenue will: A)  increase by less than $45 B)  increase by more than $45 C)  increase by exactly $45 D)  this cannot be determined without data on the farmer's costs -Refer to Table 14-2. If the firm doubles its output from three to six units, total revenue will:


A) increase by less than $45
B) increase by more than $45
C) increase by exactly $45
D) this cannot be determined without data on the farmer's costs

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

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Of the following characteristics of competitive markets, which are necessary for firms to be price takers? (i) many sellers (ii) goods offered for sale are largely the same (iii) firms can freely enter or exit the market


A) (i) and (ii) only
B) (iii) only
C) (ii) and (iii) only
D) all are necessary

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

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If rational, profit-maximising firms (like rational people) think at the margin, then marginal adjustments to production:


A) should always lower cost
B) will increase market share of the firm
C) should always increase profit (or decrease loss)
D) will increase homogeneity in the market

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

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A production cost that has already been committed and cannot be recovered is termed a:


A) development cost
B) variable cost
C) sunk cost
D) mothball cost

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

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