Price of Corn $7 MC $6 $5 ATC $4 $3 AVC $2 $1 47 1000 2000 3000 4000 5000 6000 7000 8000 Bushels of Corn (a) If the market price for corn in this market was $5, how many bushels of corn would Cornwallis produce in the short-run in order to maximize his profits? [ Select ] (b) At the market price of $5, what is the total REVENUE Cornwallis will collect in the short-run? [Select ] c) At the market price of $5, what is the total PROFIT Cornwallis will earn in the short-run? [ Select ]

5. Profit maximization and shutting down in the short run Suppose that the market for wind chimes is a competitive market. The following graph shows the daily cost curves of a firm operating in this market. (? 40 36 32 28 24 20 ATC 16 12 AVC MC 4 2 4 6 8 10 12 14 16 18 QUANTITY (Thousands of wind chimes) PRICE (Dollars per wind chime) 20

(J) Canadian red wheat is a normal good, in a perfectly competitive market which is in long run equilibrium. There occurs a boon in the economy and income rises. What effect does this have on short run equilibrium price and equilibrium quantity? Draw a short run industry graph showing the change described above. Remember to label every curve, label your axes, and demonstrate the resulting changes in the axes.

PROBLEM (4) The short run market supply for shirts is QS = 50P – 1000 and the market demand isQD = 2800 – 50P Let a typical firm operating in a perfectly competitive industry has short-run total cost and marginal cost curves: TC(q) = 100 + 20q + q2 and MC(q) = 20 + 2q (a) Determine the short run market equilibrium price and quantity for this type of shirt.(b) Determine how much the typical firm will produce at the equilibrium price you found in (a).(c) If all firms had the same cost structure, how many firms should be operating in this industry at the moment? (d) Calculate the profit or loss of each firm at the short-run market equilibrium. If they are making losses, why are they still producing in the short run? In the long run, will there be entry into the market or exit from it?(e) What would the price be in the long run equilibrium, assuming constant cost industry?(f) In the long run equilibrium, how many shirts would each firm produce? What would be a firm’s net profit?(g) How…