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AGGREGATE EXPENDITURE EQUATION: An equation indicating that aggregate expenditures (AE) are the sum of consumption expenditures (C), investment expenditures (I), government purchases (G), and net exports (X-M), stated as: AE = C + I + G + (X-M). This equation surfaces in the Keynesian economic income-expenditure model in the form of the aggregate expenditures line. However, it's also central throughout the study of macroeconomics, including aggregate demand and the measurement of gross domestic product.
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OLIGOPOLY, CONCENTRATION Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.
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BLUE PLACIDOLA
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Today, you are likely to spend a great deal of time searching for a specialty store looking to buy either a printer that works with your stockpile of ink cartridges or income tax software. Be on the lookout for telephone calls from former employers.
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Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
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"Give the American people a good cause, and there's nothing they can't lick. " -- John Wayne, actor
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ICTB
International Customs Tariffs Bureau
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