What are the three main sources of barriers to entry for monopolies?


monopoly resources
government regulation
the production process

Economics

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The international reserves of the Federal Reserve System include its holdings of ________

A) Treasury securities B) discount loans to commercial banks C) foreign currency denominated assets D) U.S. dollars, British pounds and Euros

Economics

Unemployment

a. usually decreases whenever nominal GDP decreases. b. usually increases whenever real GDP decreases. c. usually decreases whenever nominal GDP increases. d. usually increases whenever the price level increases.

Economics

Assume that the medical screening industry is perfectly competitive. Consider a typical firm that is making short-run losses

Suppose the medical screening industry runs an effective advertising campaign which convinces a large number of people that yearly CT scans are critical for good health. How will this affect a typical firm that remains in the industry? A) The firm's marginal revenue curve and average cost curve shift upwards in response to the increase in market price and advertising expenditure. The firm increases output until it starts breaking even. B) The marginal revenue curve shifts upwards, the firm's output increases along its marginal cost curve, it expands production until it breaks even. C) The firm's supply curve shifts right and its marginal revenue curve shifts upwards as the market price rises and ultimately the firm starts making profits. D) The marginal revenue curve shifts upwards, the firm's output increases along its marginal cost curve, it expands production and eventually starts making profits.

Economics

Refer to the table below. Suppose the profit for each unit of paper product is $3.00 and the profit for each unit of lumber is $13.50 and Big Oaks is producing the profit-maximizing quantity of lumber and paper products. If the profit from each unit of paper product increases from $3.00 to $4.00 and the profit for each unit of lumber does not change, to maximize profit, Big Oaks should produce a

________ proportion of paper products and produce ________ units of paper products and lumber.


Big Oaks can produce either paper products or lumber with each tree that they harvest. Because Big Oaks can adjust the amount of paper products and lumber they produce from the harvested trees, paper products and lumber are produced in variable proportions. The above table summarizes Big Oaks production possibilities from each harvested tree.

A) smaller; less
B) smaller; more
C) greater; less
D) greater; more

Economics