(15) What is the minimum price needed by the firm to break even (i.e., earn zero economic profits)? Explain. (16) What is the shutdown price? Explain.

Suppose that the jackfruit industry is initially operating in long-run equilibrium at a price level of $5 per pound of jackfruit and quantity of 75 million pounds per year. Suppose a top medical journal publishes research that animal-alternative protein sources such as jackfruit could decrease your expected lifespan by 5 years. The publication is expected to cause consumers to demand jackfruit at every price. In the short run, firms will respond by Shift the demand curve, the supply curve, or both on the following graph to illustrate these short-run effects of the publication. 2 1 10 9 8 Supply Demand 0 0 + 15 30 45 60 75 90 105 120 135 150 QUANTITY (Millions of pounds) In the long run, some firms will respond by + 1 } Demand Supply until Shift the demand curve, the supply curve, or both on the following graph to illustrate both the short-run effects of the publication and the new long- run equilibrium after firms and consumers finish adjusting to the news. 2 1 10 9 Supply Demand B…

A firm operates in a perfectly competitive market. The firm’s total cost of production is given by the following equation: TC(q) = 100 + 48q2 + 5q, where q is the quantity supplied. What is the shutdown point for this firm in the short run, or in other words, what is the market price below which a firm is better off not supplying any units in the short run? [Advice: draw AVC and MC]

Use the following statements to answer this question: 1) The firm’s decision to produce zero output when the price is less than the average variable cost of production is known as the shutdown rule 2)The firm’s supply decision is to generate zero output for all prices below the minimum AVC. A) 1 and 2 are true b)1 is true and 2 is false c)2 is true and 1 is false d) 1 and 2 are false

7. Short-run supply and long-run equilibrium Consider the perfectly competitive market for copper. Assume that, regardless of how many firms are in the industry, every firm in the industry is identical and faces the marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves shown on the following graph. COSTS (Dollars per kilogram) 80 72 64 56 48 40 32 16 8 0 0 4 MC 8 ATC AVC □ 12 16 20 24 28 32 QUANTITY (Thousands of kilograms) 36 The following diagram shows the market demand for copper. □ 40 ? Use the orange points (square symbol) to plot the initial 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 20 firms. Finally, use the green points (triangle symbol) to plot the short-run industry…

Question 23 A competitive firm has a total cost function in dollars of the form C(q)= 100–4q + q^2, where q is output. Suppose the market price is $10 per unit of output. What is the firm’s short run point elasticity of supply? a) 20/7 b) 5/7 c) 10/7 d) 0.5 e) 2

If a firm operates at a loss, the loss is equal to TC - TR. If the firm shuts down instead, its loss is equal to FC. Given this, show that price must exceed AVC for the firm to operate at a loss and not shut down

Marginal cost= 2x+3 Average variable cost= x+3 Variable cost=x^2 + 3x x is the daily output. Product's price is 13 dollars. Part a) Calculate the level of output that will be produced.  Part b) Calculate the producer surplus of the firm.  Part c) The fixed costs are 5 dollars. In the short run, is the firm making a 0 economic profit, a positive profit, or a negative profit? Explain why.

Will, Jill, and Phil are all wheat farmers. The wheat industry is perfectly (purely) competitive. The first chart shows how much each farmer produces at different price levels. The second chart shows each farmer's minimum average total cost (ATC), average variable cost (AVC), and marginal cost (MC). Based on this data (assuming these three are the only producers), answer the questions that follow. Short-run quantity supplied Price Will Jill Phil $2.00 4 2 0 $4.00 6 4 2 $6.00 9 5 4 $8.00 12 8 6 Firm a. What is the cause of the divergence in the short-run Minimum ATC and long-run supply curves? Minimum AVC Minimum MC $1.00 $2.00 Will Jill Phil $2.50 $5.00 $7.00 $2.50 $0.50 $1.00 $2.00 government regulation changes in the market differing individual cost structures b. Suppose that the market price dips to $2.25 in the short run before ultimately settling at $2.50 per bushel. Who exits immediately, and who exits in the long-run when costs are no longer fixed? Phil exits immediately, Jill…