ECO 1104 Chapter Notes - Chapter 14-15: Marginal Revenue, Marginal Cost, Demand Curve

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Competitive market: a market in which there are many buyers and many sellers so that each has a negligible impact on the market price. Characteristics: there are many buyers and many sellers in the market, the goods offered by the various sellers are largely the same, firms can freely enter or exit the market. Average revenue: total revenue divided by the quantity sold. Marginal revenue: the change in total revenue from an additional unit sold. If marginal revenue is greater than the marginal cost, the firm should increase its output. If marginal cost is greater than marginal revenue, the firm should decrease its output: at the profit maximizing level of output, marginal revenue and marginal cost are exactly equal. Marginal cost as the competitive firm"s supply curve. Since the firm"s marginal cost curve determines the quantity of the good the firm is willing to supply at any given price, it is the firm"s supply curve.

Related Questions

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.

1.Profit maximizing firms should increase output to the point where:

a.Total revenue is largest

b.Total revenue just exceeds total costs

c.An increase in revenue is just offset by an increase in cost.

d.Fixed costs are covered

e.Total cost is minimized

2.The Golden Rule of Output Determination for a perfectly competitive firm is to:

a.Choose the output rate at which price is greatest.

b.Choose the output rate at which marginal revenue equals marginal cost.

c.Produce to the point of diminishing marginal returns

d.Produce until total revenue exceeds total cost.

e.Choose the output rate at which total cost is the lowest.

3.Which of the following conditions would indicate that a perfectly competitive firm should expand output to increase its profit?

a.Marginal cost equals average cost

b.Total cost exceeds marginal cost

c.Price exceeds marginal cost

d.Total revenue exceeds total costs

e.Total revenue equal price

4. It would not pay a firm to produce anything in the short run if the price were:

a.Above average total costs

b.Equal to marginal cost and above the average variable cost.

c.Equal to total revenue divided by output

d.Below average variable cost

e.Below marginal average cost

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1. Competitive markets are characterized by

a. The interdependence of firms.

b. A small number of buyers and sellers.

c. Free entry and exit by firms.

d. Unique products.

2. A firm that shuts down temporarily has to pay

a. Both its variable costs and fixed costs.

b. Its variable costs but not its fixed costs.

c. Its fixed costs but not its variable costs.

d. Neither its variable costs nor its fixed costs.

3. A profit-maximizing firm will shut down in the short run when

a. Average revenue is greater than the average fixed cost.

b. Price is less than the average total cost.

c. Average revenue is greater than marginal cost.

d. Price is less than average variable cost.

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ECO 1104 Chapter Notes - Chapter 14-15: Marginal Revenue, Marginal Cost, Demand Curve

ECO 1104 Full Course Notes

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