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Fixed costs are
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a production expense that does not vary with output.
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A specific tax of $1 per unit of output will affect a firm's
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average total cost, average variable cost, and marginal cost
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If the cost of labor decreases, the isocost line
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rotates outward around the point where only capital is employed in production
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The slope of the isocost line tells the firm how much
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capital must be reduced to keep total cost constant when hiring one more unit of labor
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When the isocost line is tangent to the isoquant, then:
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all of the above
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When the isocost line is tangent to the isoquant, then
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the firm is producing that level of output at minimum cost.
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If the marginal rate of technical substitution for a cost minimizing firm is 2, and the wage rate for labor is $5, what is the rental rate for capital in dollars? (K on the vertical axis.)
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0.5
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A firm can minimize cost by
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all of the above
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The long run average cost curve may initially slope downward due to
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economies of scale
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If there are diseconomies of scale within a given range of output, which of following is(are) TRUE?
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The long-run average cost curve must be upward sloping within that range of output.
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Economists define a market to be competitive when the firms
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are price takers
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If a profit-maximizing firm finds that, at its current level of production, MR < MC, it will
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decrease output
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The above figure shows the cost curves for a competitive firm. The firm will incur economic losses if the price is less than
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$10
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The above figure shows the cost curves for a competitive firm. If the profit-maximizing level of output is 40 price is equal to
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$15
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The above figure shows the cost curves for a competitive firm. If the market price is $15 per unit, the firm will earn profits of
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$160
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If a competitive firm maximizes short-run profits by producing some quantity of output, which of the following must be true at that level of output?
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All of the above
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A firm will shut down in the short run if
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total revenue from operating would not cover variable costs
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An increase in the cost of a variable input will result
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all of the above
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If a competitive firm is in short-run equilibrium, then
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an increase in its fixed cost will have no effect on output
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The competitive firm's supply curve is equal to
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the portion of its marginal cost curve that lies above the AVC
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There are currently N identical firms in a market. If it is a perfectly competitive market, the short-run market supply curve at any given price is
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N times the supply of an individual firm
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In the long run, profits will equal zero in a competitive market because of
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free entry and exit
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Assuming a horizontal long-run market supply curve, which of the following statements if (are) true about competitive firms in the long run
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P=AC
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Suppose that for each firm in the competitive market for potatoes, long-run average cost is minimized at $0.20 per pound when 500 pounds are grown. If the long-run supply curve is horizontal. then
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the long-run price will be $0.20 per pound
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Long-run market supply curves are upward sloping if
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input prices rises as the industry expands
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Isoquants that are downward sloping straight lines exhibit
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a constant marginal rate of technical substitution
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The slope of the isoquant tells the firm how much
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capital must decrease to keep output constant when labor increases by one unit
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The above figure shows the isoquants for producing steel. Constant returns to scale are
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present when producing between 10,000 and 20,000 tons
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Joey's Lawncutting Service rents office space from Joey's dad for $300 per month. Joey's dad is thinking of increasing the rent to $400 per month. As a result Joey's marginal cost of cutting grass will
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not change
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Assume baseball player salaries are fully determined before the season starts. From the point of view of the baseball team owner, player salaries during the course of the season are then
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fixed costs
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The above figure shows the isoquants for producing steel. When producing less than 10,000 tons there are
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increasing returns to scale
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The producer surplus is equal to
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the difference between price and marginal cost for all units sold
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A competitive market maximizes social welfare because in a competitive market
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price equals marginal cost of the last unit produced
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Mister Jones was selling his house. The asking price was $220,000, and Jones decided he would take no less than $200,000. After some negotiation, Mister Smith purchased the house for $205,000. Jones' producer surplus is
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$5,000
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The total welfare associated with a market that includes a government sales tax equals
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consumer surplus plus producer surplus plus government tax revenue
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If activists successfully lobbied government to force firms to produce more output than they normally would in a perfectly competitive market,
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total surplus in the market would decline
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The above figure shows supply and demand curves for milk. If the government passes a $2 per gallon specific tax, the loss in social welfare will equal (Hint: draw an after-tax supply curve)
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F+g
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The above figure shows supply and demand curves for milk. If the government passes a $2 per gallon specific tax, the loss in consumer surplus will equal
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b+f
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The above figure shows supply and demand curves for milk. If the government passes a $2 per gallon specific tax, the tax revenue is
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$2*Q1
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The above figure shows supply and demand curves for an apartment units in a large city. If the city government passes a law that establishes $350 per month as the legal maximum rent, the loss in social welfare equals
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f+g
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The above figure shows supply and demand curves for apartment units in a large city. If the city government passes a law that establishes $350 per month as the legal maximum rent, the consumer's net gain in surplus equals
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c-f
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The above figure shows supply and demand curves for apartment units in a large city. If the city government passes a law that establishes $350 per month as the legal maximum rent, producer surplus decreases by
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c+g
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Variable costs are
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A) a production expense that changes with the quantity of output produced
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If average cost is decreasing
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A) marginal cost is less than average cost
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Suppose a firm can only vary the quantity of labor hired in the short run. An increase in the cost of capital will
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C) have no effect on marginal cost
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Which of the following will cause the average fixed cost curve making cigarettes to shift?
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C) a $5 million penalty charged to each cigarette smoker
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Which of the following will cause the marginal cost curve of making cigarettes to shift?
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C) A $1 per pack tax on cigarettes
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Which of the following will cause the average cost curve of making cigarettes to shift?
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D) All of the above
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Assume Congress decides that oil companies are making too much profit and decides to tax oil companies for each gallon of gasoline produced. This would
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B) shift the marginal cost curve up
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The slope of the isocost line tells the firm how much
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C) capital must be reduced to keep the total cost constant when hiring one more unit of labor
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Suppose each worker must use only one shovel to dig a trench, and shovels are useless by themselves. In the short run, an increase in the price of shovels will result in
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B) no change in the firm's output
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When the isocost line is tangent to the isoquant, then
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the firm is producing that level of output at minimum cost
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Long-run average cost is never greater than short-run average cost because in the long run
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C) the firm can move to the lowest possible isocost line
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Firms that exhibit price-taking behavior
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A) have outputs that are too small to influence market prices and this take it as given
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If consumers view the output of any firm in a market to be identical to the output of any other firm in the market, the demand curve for the output of any given firm
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C) horizontal
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14) If a competitive firm maximizes short-run profits by producing some quantity of output, which of the following must be true at that level of output?
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p greater than or equal to AVC
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Suppose that for each firm in the competitive market for potatoes, long-run average cost is minimized at $0.20 per pound when 500 pounds are grown. If the long-run supply curve is horizontal, then
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the long-run price will be $0.20 per pound
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If a firm is a price taker, then its marginal revenue will always equal
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price
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If a competitive firm is in short-run equilibrium, then
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All of the above are possible in the short-run
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Which is an important aspect of the perfectly competitive market that leads to long run equilibrium?
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freedom of entry and exit
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Long-run market supply curves are downward sloping if
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input prices fall as the industry expands
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Downward sloping long-run supply curves occur in markets
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with decreasing returns to scale
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Mister Jones was selling his house. The asking price was $220,000, and Jones decided he would take no less than $200,000. After some negotiation, Mister Smith purchased the house for $205,000. Jones' producer surplus is
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$5,000