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ECO-4 Lecture 21: Introductory_Economics_21

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School
RCC
Department
Economics
Course
ECO-4
Professor
hamilton

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Document Summary

Total revenue: price of its output multiplied by number units of outputs sold (p x q) Marginal revenue : change in total revenue that results from a one-unit increase in quantity sold (dividing change in total revenue by change in quantity sold) Firm can sell any quantity it chooses @ market price. Demand curve for firm"s product = horizontal line @ market price, same as firm"s marginal revenue curve = perfectly elastic. But market demand is not perfectly elastic depends on substitutability of sweaters for other goods & services. Goal of competitive firm = maximize economic profit, given constraints it faces. To achieve firm must decide: how to produce @ minimum cost, what quantity to produce, whether to enter/exit the market. By being on its long-run average cost curve. Demonstrates break-even point when tr = tc & economic profit/ loss (tr-tc) @ given quantity.

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Related Questions

A. A competitive firm

  1. can consider only its location in setting the price.
  2. must base its competitive price on product differentiation.
  3. has the ability to set its own price.
  4. must accept the price determined by the intersection of the market supply and demand curves.
  5. has no supply curve.

B.Ā If a firm is making an economic profit, then

  1. the factors of production are being paid their opportunity costs.
  2. there will be no change in the number of firms if the industry is perfectly competitive.
  3. the factors of production are being paid less than their opportunity costs.
  4. the factors of production are being paid more than their opportunity costs.
  5. the firm will exit the industry

C.Ā Along a downward-sloping monopoly demand curve,

  1. marginal revenue is greater than price.
  2. the elasticity of demand is constant.
  3. marginal revenue decreases when the price decreases.
  4. marginal revenue is equal to zero when the price is equal to zero

D.Ā If, in the short run, a perfectly competitive firm is producing at a point where the total cost is greater than total revenue, then the firm should

  1. shut down because economic profits are negative.
  2. continue to produce as long as P > AVC.
  3. continue to produce because accounting profits are positive.
  4. set a higher price for its output.
  5. set a lower price for its output

E.Ā For a perfectly competitive firm, the demand curve is

  1. the marginal revenue curve.
  2. perfectly inelastic.
  3. always equal to marginal cost.
  4. the same as the market demand curve

F.Ā A firm in a(n) industry will have the most elastic demand curve

  1. monopolistic
  2. oligopolistic
  3. monopolistically competitive
  4. perfectly competitive

G.Ā If the demand curve of a monopolist is in the inelastic range, then

  1. total revenue will fall if the price increases.
  2. total revenue will be unchanged if the price increases.
  3. total revenue will rise if the price increases.
  4. the total supply will increase by an equal amount if demand increases.
  5. the price will be unchanged if total revenue increases

H. Monopolistic competition and oligopoly are examples of

  1. monopoly.
  2. perfect competition.
  3. theories of consumer behavior.
  4. imperfect competition.
  5. the extreme cases on the market structure continuum

I.Ā Under which market structure do firms face the flattest (most elastic) demand curve?

  1. perfect competition
  2. monopolistic competition
  3. oligopoly
  4. monopoly

J.Ā At the point of long-run equilibrium for a perfectly competitive firm,

  1. economic profits are zero.
  2. TR > TC.
  3. TR < TC.
  4. P = AVC.
  5. normal profits are zero.

32. Which of the following is not a difference between monopolies and perfectly competitive markets?

A. Monopolies face downward sloping demand curves while perfectly competitive firms face horizontal demand curves.

B. Monopolies charge a price higher than marginal cost while perfectly competitive firms charge a price equal to marginal cost.

C. Monopolies can earn profits in the long run while perfectly competitive firms break even.

D. Monopolies choose to produce the quantity at which marginal revenue equals marginal cost while perfectly competitive firms do not.

40. Which of the following statements is not correct?

A. Both monopolies and monopolistically competitive firms can earn economic profits in the long run.

B. Both monopolistically competitive and perfectly competitive firms can earn economic profits in the short run.

C. Only competitive firms produce the welfare-maximizing level of output.

D. Firms in perfect competition, monopolistic competition, and monopoly maximize profits by producing where marginal revenue equals marginal cost.

43. A monopolistically competitive firm is currently producing 20 units of output. At this level of output the firm is charging a price equal to $20, has marginal revenue equal to $12, has marginal cost equal to $12, and has average total cost equal to $18. From this information we can infer that

A. the profits of the firm are negative.

B. firms are likely to leave this market in the long run.

C. the firm is currently maximizing its profit.

D. All of the above are correct.

20) When price is less than average variable cost at the profit-maximizing level of output, a firm should: A) continue to produce the level of output at which marginal revenue equals marginal cost if it is operating in the long run. B) shutdown, because it cannot even cover all of its variable costs let alone its fixed costs if it stays in business. C) shutdown, because it will lose nothing in that case. D) continue to produce the level of output at which marginal revenue equals marginal cost if it is operating in the short run. 21) When price is greater than average variable cost but less than average total cost at the profit-maximizing level of output, a firm should: A) continue to produce the level of output at which marginal revenue equals marginal cost. B) shutdown to minimize its losses. C) reduce output to the level at which price equals average variable cost to minimize its losses. D) increase output to minimize its losses. 22) Assume that at the current market price, a perfectly competitive firm's profit-maximizing level of output yields total revenues that are just equal to total costs. Which of the following statements applies to this firm? A) The firm should increase its explicit costs to reduce its tax burden. B) The firm should shut down right now. C) The firm should continue to operate in the short run to minimize losses, but shut down if things don't improve over the long run. D) The firm is earning zero economic profit and should continue to operate. 23) The perfectly competitive firm's supply curve: A) coincides with its perfectly elastic demand curve. B) is the firm's average total cost curve above the shutdown point. C) is perfectly inelastic at the market price. D) is the firm's marginal cost curve above the minimum point on the AVC curve. 24) Assume there is a decrease in the market demand for a good sold by price-taking firms that are initially producing the profit-maximizing level of output. How will the market adjust over time? A) Firms will exit the market, causing price to rise until losses are eliminated. B) Firms will exit the market, causing price to fall until positive profits are eliminated. C) Firms will enter the market, causing price to fall until positive profits are eliminated. D) Firms will enter the market, causing price to rise until losses are eliminated. 25) What is the "most efficient capacity" for the perfectly competitive firm? A) The plant size for which Price = AR. B) The plant size at which LRAC is at its minimum. C) The plant size at which MR = MC. D) The plant size at which any of the SRATC curves are tangent to the LRAC curve.