Short Chapter Assignment – Ch 5

The following graph illustrates the demand and marginal revenue curve (D=MR) of a perfectly competitive firm. Suppose that when the firm produces 70 units, its average variable cost equals $30 per unit and its average total cost equals $55 per unit. Use the green rectangle (triangle symbols) to plot the total cost of producing 70 units. Next, use the grey rectangle (star symbols) to plot the total variable cost of producing 70 units. Then, use the tan rectangle (dash symbols) to plot the total revenue at 70 units. Finally, use the purple rectangle (diamond symbols) to plot the profit or loss at 70 units. PRICE AND COST (Dollars) 100 90 80 70 60 50 40 30 20 10 0 O 10 20 30 40 50 60 QUANTITY (Units) +ATC + AVC 70 D=MR 80 90 100 Total Cost Total Variable Cost Total Revenue Profit or Loss ?

Consider the perfectly competitive market for dress shirts. The following graph shows the marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves for a typical firm in the industry. PRICE AND COST PER UNIT (Dollars) 100 90 80 70 60 40 30 20 10 0 0 ☐ ☐ MC ■ ATC AVC 70, 85 ■ 10 20 30 40 50 60 70 80 90 QUANTITY OF OUTPUT (Thousands of shirts) 100 ?

The following graph illustrates the demand and marginal revenue curve (D-MR) of a perfectly competitive firm. Suppose that when the firm produces 40 units, its average variable cost equals $65 per unit and its average total cost equals $80 per unit. Use the green rectangle (triangle symbols) to plot the total cost of producing 40 units. Next, use the grey rectangle (star symbols) to plot the total variable cost of producing 40 units. Then, use the tan rectangle (dash symbols) to plot the total revenue at 40 units. Finally, use the purple rectangle (diamond symbols) to plot the profit or loss at 40 units. PRICE AND COST (Dollars) 100 90 80 70 60 50 40 30 20 10 0 0 10 + 20 +ATC + AVC 30 40 50 60 QUANTITY (Units) 70 80 D=MR 90 H 100 Total Cost Total Variable Cost I Total Revenue Profit or Loss ?

The market for corn is perfectly competitive and all firms are in long-run equilibrium currently. What will happen in the market if the incomes of corn consumers rise, assuming corn is an inferior good? Use two appropriately labelled graphs of the market and the individual perfectly competitive firm to explain.

you've been learning about what makes a market perfectly competitive, how a firm in a perfectly competitive market makes profit-maximizing decisions, and how a perfectly competitive market moves towards equilibirium.    But how applicable is this to real life?   For this discussion, try to think of a market (for a product or service) that is perfectly competitive or very close to it.  What characteristics of the market make it like perfect competition?  Are there factors that keep it from being perfectly competitive?  If so, what are they?  How close do you think the firms in this market are to perfectly competitive firms in choosing equilibrium price and quantity?

Suppose the market for beans is perfectly competitive. The average total cost and marginal cost of growing beans in the long run for an individual farmer are illustrated in the graph to the right. According to the graph, the long run equilibrium price for beans is $ per box. (Enter a numeric response using a real number rounded to two decimal places.) If at this price an individual bean farmer produces 70 boxes of beans per week, she will have economic profits of $ To break even in the long run, bean farmers must produce the quantity that occurs at lowest fixed cost at lowest marginal cost at lowest average cost. CCD + Price and cost (dollars per box) 10- 9- 8- 6- 46 5- 4- 3- 2- 1 ATC 10 20 30 40 50 60 70 80 90 100 Quantity of beans (boxes per week)

he following graph summarizes the demand and costs for a firm that operates in a perfectly competitive market. What level of output should this firm produce in the short run? What price should this firm charge in the short run? What is the firm’s total cost at this level of output? What is the firm’s total variable cost at this level of output? What is the firm’s fixed cost at this level of output? What is the firm’s profit if it produces this level of output? What is the firm’s profit if it shuts down? In the long run, should this firm continue to operate or shut down? problem 123 are solved, this is subparts 4-8

The graph shows the marginal cost (MC), average total cost (ATC), and marginal revenue (MR) curves for a perfectly (or purely) competitive firm. Note, for such firms, the demand (D) curve is the same as the MR curve. Answer two questions, specifying to at least one decimal place. How many units should this firm produce to maximize profit? number of units: What price will the firm receive for each unit at the profit maximizing level out output? $ MC/MR $12 9.7 5.6 D=MR MC ATC 6.6 10.2 12 16 Quantity

According to marginal analysis, a perfectly competitive firm will produce an output level where what is true about its Marginal Revenue and its Marginal Cost?

A perfectly competitive firm is currently maximizing profits. The market for its product is in a long-run equilibrium. Market demand for the product decreases. Briefly explain what happens in the market by describing what will happen to this firm’s production (and most importantly why) as a result of that change. Describe what will happen and why to the firm’s costs and profits as the firm makes its choices. Emphasize why each type of individual cost does or does not change as the firm changes its level of production.

Can someone please explain why the long run graph would look like this?

7. Short-run supply and long-run equilibrium Consider the competitive market for rhenium. Assume that no matter how many firms operate in the industry, every firm is identical and faces the same marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves plotted in the following graph. COSTS (Dollars per pound) 100 90 80 70 60 40 20 10 + 0 + 0 MC + 5 ATC AVC D 0 10 15 20 25 30 35 QUANTITY (Thousands of pounds) 40 + 45 50 ?

Consider the perfectly competitive market for sports jackets. The following graph shows the marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves for a typical firm in the industry. PRICE AND COST PER UNIT 100 90 10 0 10 Price (Dollars per jacket) 15 20 25 55 70 85 20 10 100 0 00 For each price in the following table, use the graph to determine the number of jackets this firm would produce in order to maximize its profit. Assume that when the price is exactly equal to the average variable cost, the firm is indifferent between producing zero jackets and the profit-maximizing quantity. Also, indicate whether the firm will produce, shut down, or be indifferent between the two in the short run. Lastly, determine whether it will make a profit, suffer a loss, or break even at each price. 20 10 D MC-D 0 · D 0 ATC O AVC On the following graph, use the orange points (square symbol) to plot points along the portion of the firm's short-run supply curve that…

Suppose that the perfectly competitive chicken industry is in long-run equilibrium at a price of $3 per kilogram of chicken and a quantity of 600 million kilograms per year. Suppose Health Canada issues a report saying that eating chicken is bad for your health. Health Canada's report will cause consumers to demand chicken at every price. In the short run, firms will respond by Shift the supply curve, the demand curve, or both on the following diagram to illustrate these short-run effects of Health Canada's announcement. Note: Select and drag one or both of the curves to the desired position. Curves will snap into position, so if you try to move a curve and it snaps back to its original position, just drag it a little farther ? Supply Demand PRICE (Dollars per kilogram) QUANTITY (Millions of kilograms)

Economics Question

5. Profit maximization and shutting down in the short run Suppose that the market for cashmere sweaters is a competitive market. The following graph shows the daily cost curves of a firm operating in this market. 100 90 80 70 60 50 АТC 40 30 AVC 20 MC 10 10 20 30 40 50 60 70 80 90 100 QUANTITY (Thousands of sweaters) PRICE (Dollars per sweater)

Suppose that Betty's Beads is a typical firm operating in a perfectly competitive market. Currently Betty's MR = $ 9 , MC = $ 12 , ATC = $ 10 , and AVC = $ 8 . Based on this information, we can conclude that

Consider the perfectly competitive market for steel. Assume that, regardless of how many firms are in the industry, every firm in the industry is identical and faces the marginal cost (MCMC), average total cost (ATCATC), and average variable cost (AVCAVC) curves shown on the following graph.   The following diagram shows the market demand for steel. Use the orange points (square symbol) to plot the short-run industry supply curve when there are 10 firms in the market. (Hint: You can disregard the portion of the supply curve that corresponds to prices where there is no output since this is the industry supply curve.) Next, use the purple points (diamond symbol) to plot the short-run industry supply curve when there are 15 firms. Finally, use the green points (triangle symbol) to plot the short-run industry supply curve when there are 20 firms.   If there were 20 firms in this market, the short-run equilibrium price of steel would be   per ton. At that price, firms in this…

7. Short-run supply and long-run equilibrium Consider the competitive market for rhodium. Assume that no matter how many firms operate in the industry, every firm is identical and faces the same marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves plotted in the following graph. COSTS (Dollars per pound) 100 90 80 70 60 50 40 30 20 2 10 0 MC 0 5 ATC AVC ☐ ■ 10 15 20 25 30 35 QUANTITY (Thousands of pounds) 40 45 50 ?

Consider the competitive market for rhodium. Assume that no matter how many firms operate in the industry, every firm is identical and faces the same marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves plotted in the following graph. 82 8 80 72 64 COSTS (Dollars per pound) 238 16 8 0 0 3 MC ATC O AVC 0 0 6 9 12 15 18 21 QUANTITY (Thousands of pounds) 24 27 30 The following graph plots the market demand curve for rhodium. ?

The following attached graph represents the situation of Sindbad’s caps, a firm selling caps in the perfectly competitive caps industry.   QUESTION 1 How much output should Sindbad produce to maximize his profit, if the market price is equal to $11? How much profit (loss) will he earn? Indicate the profit (loss) area on the graph. Suppose Sindbad decides to shut down. What would his loss be?

Graphically explain the profit maximization condition of a perfect competitive firm.

The following attached graph represents the situation of Sindbad’s caps, a firm selling caps in the perfectly competitive caps industry. please no handwriting graph  QUESTION 1 How much output should Sindbad produce to maximize his profit, if the market price is equal to $11? How much profit (loss) will he earn? Indicate the profit (loss) area on the graph. Suppose Sindbad decides to shut down. What would his loss be?

Suppose Jayden operates a handicraft pop-up retail shop that sells cardigans. Assume a perfectly competitive market structure for cardigans with a market price equal to $25 per cardigan. The following graph shows Jayden's total cost curve. Use the blue points (circle symbol) to plot total revenue and the green points (triangle symbol) to plot profit for cardigans for quantities zero through seven (including zero and seven) that Jayden produces. TOTAL COST AND REVENUE (Dollars) 200 175 150 125 100 75 50 0 -25 0 1 2 3 4 5 QUANTITY (Cardigans) 6 Total Cost 7 8 O Total Revenue Profit