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OLIGOPOLY CHARACTERISTICS: The three most important characteristics of oligopoly are: (1) an industry dominated by a small number of large firms, (2) firms sell either identical or differentiated products, and (3) the industry has significant barriers to entry.

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LONG-RUN TOTAL COST

The opportunity cost incurred by all of the factors of production used in the long run (when all inputs are variable) by a firm to produce a good or service, including wages paid to labor, rent paid for the land, interest paid to capital owners, and a normal profit earned by entrepreneurs. Unlike short-run total cost, long-run total cost cannot be separated into fixed cost and variable cost. In the long run, all inputs are variable, so all cost is variable.

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BEIGE MUNDORTLE
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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius looking to buy either a package of blank rewritable CDs or yellow cotton balls. Be on the lookout for cardboard boxes.
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The penny is the only coin minted by the U.S. government in which the "face" on the head looks to the right. All others face left.
"Leadership is the art of getting someone else to do something you want done because he wants to do it."

-- Dwight Eisenhower, 34th US president

MPP
Marginal Physical Product
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