What are the four most important ways a firm becomes a monopoly? the four main reasons a firm becomes a monopoly are:

a. the government blocks entry, control of a key resource, network externalities, and economies of scale.
b. antitrust legislation, control of a key resource, no close substitutes, and economies of scale.
c. the government blocks entry, control of a key resource, network externalities, and diseconomies of scale.
d. antitrust legislation, control of a key resource, arbitrage, and economies of scale.
e. the lack of patents and copyrights, control of a key resource, network externalities, and economies of scale.

Ski powder resort ends its fiscal year on april 30. the business adjusts its accounts monthly, but closes them only at year-end (april 30). the resort's busy season is from december 1 through march 31. adrian pride, the resort's chief financial officer, the museums a close watch on lift ticket revenue and cash. the balances of these accounts at the end of each of the last five months are as follows:

For each of the following situations, indicate whether you agree or disagree with the financial reporting practice employed and state the basic assumption, component, or accounting principle that is applied (if you agree) or violated (if you disagree).wagner corporation adjusted the valuation of all assets and liabilities to reflect changes in the purchasing power of the dollar. spooner oil company changed its method of accounting for oil and gas exploration costs from successful efforts to full cost. no mention of the change was included in the financial statements. the change had a material effect on spooner's financial statements. cypress manufacturing company purchased machinery having a five-year life. the cost of the machinery is being expensed over the life of the machinery. rudeen corporation purchased equipment for $180,000 at a liquidation sale of a competitor. because the equipment was worth $230,000, rudeen valued the equipment in its subsequent balance sheet at $230,000.davis bicycle company received a large order for the sale of 1,000 bicycles at $100 each. the customer paid davis the entire amount of $100,000 on march 15. however, davis did not record any revenue until april 17, the date the bicycles were delivered to the customer. gigantic corporation purchased two small calculators at a cost of $32.00. the cost of the calculators was expensed even though they had a three-year estimated useful life. esquire company provides financial statements to external users every three years.

3. saving two consumers, larry and jeff, have utility functions defined over the two periods of their lives: middle age (period zero) and retirement (period 1). they have the same income in period 0 of m dollars and they will not earn income in period 1. the interest rate they face is r. larry’s and jeff’s utility functions are as follow. = 0.5 + 0.5 and = 0.5 + 0.5 for each person is between zero and one and represents each consumer’s temporal discount econ 340: intermediate microeconomics. ben van kammen: purdue university. rate. a. write the budget constraint that applies to both jeff and larry in terms of consumption in each period and ), interest rate, and m. b. what is larry’s and what is jeff’s marginal rate of intertemporal substitution? c. what is the slope of the budget constraint? d. write each consumer’s condition for lifetime utility maximization. e. re-arrange the conditions from part (d) to solve for the ratio, . f. if > which consumer will save more of his middle age income? g. if > 1 1+ , in which period will larry consume more: = 0 or = 1?