Wikipedia is one of the world's largest and most popular public goods. students around the world are able to access archives of information for homework, general knowledge, and random wasting of time on the internet. however, wikipedia is not free to operate, as it requires money to pay its staff and maintain its servers. free riding is one of the biggest issues for wikipedia, as millions of people use it daily without incurring any of the costs. assuming wikipedia thinks they have too many free riders, which solution would not reduce, or offset, the free rider problem? o

a. jimmy wales, the founder, makes personal appeals asking users to donate a charitable amount to keep wikipedia going. o
b. wikipedia charges a small si per year membership fee to everyone except those who author content-approved o
c. wikipedia sells its sidebar space to advertising. o
d. wikipedia creates a duplicate website, wekepedia, with the same content as wikipedia, but costs $25 a year.
e. wikipedia articles. wikipedia would remain free to the public.

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.

Mark knopf is an auditor who has been asked to provide an audit and financial statement certification for a company that is going public on the new york stock exchange. knopf wants to know his personal liability if the company provides him with inaccurate or false information. which of the following sources of law will him answer that question? a. the city ordinances where the company headquarters is located. b. the state constitution of the state where the company is incorporated. c. code of federal regulations. d. all of the above

Why is efficiency an important economic goal?