Sort the following events by their impact on the u. s. economy. determine whether each event shifts only the short-run aggregate supply (sras) curve, both the sras curve and the long-run aggregate supply (lras) curve, or neither.
items (5 items) (drag and drop into the appropriate area below)
canada cuts oil exports from the alberta oil sands pending the outcome of an environmental review.
an innovation in irrigation makes u. s. farms more productive.
a new oil field is discovered just off the coast of oregon, significantly increasing the national supply of oil.
a milder-than-usual winter produces a bumper citrus crop in florida.
incomes in the united states increase by 5% in real terms.
shifts:
sras only
drag and drop here
lras and sras
drag and drop here
neither
drag and drop here

5. profit maximization and shutting down in the short run suppose that the market for polos is a competitive market. the following graph shows the daily cost curves of a firm operating in this market. 0 2 4 6 8 10 12 14 16 18 20 50 45 40 35 30 25 20 15 10 5 0 price (dollars per polo) quantity (thousands of polos) mc atc avc for each price in the following table, calculate the firm's optimal quantity of units to produce, and determine the profit or loss if it produces at that quantity, using the data from the previous graph to identify its total variable cost. assume that if the firm is indifferent between producing and shutting down, it will produce. (hint: you can select the purple points [diamond symbols] on the previous graph to see precise information on average variable cost.) price quantity total revenue fixed cost variable cost profit (dollars per polo) (polos) (dollars) (dollars) (dollars) (dollars) 12.50 135,000 27.50 135,000 45.00 135,000 if the firm shuts down, it must incur its fixed costs (fc) in the short run. in this case, the firm's fixed cost is $135,000 per day. in other words, if it shuts down, the firm would suffer losses of $135,000 per day until its fixed costs end (such as the expiration of a building lease). this firm's shutdown price—that is, the price below which it is optimal for the firm to shut down—is per polo.

20. to add body to a hearty broth, you may use a. onions. b. pasta. c. cheese. d. water.

Providing a great shopping experience to customers is one of the important objectives of purple fashions inc., a clothing store. to achieve this objective, the company has a team of committed customer service professionals whose job is to ensure that customers get exactly what they want. this scenario illustrates that purple fashions is trying to achieve