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I: The standard abbreviation for investment expenditures by the business sector, especially when used in the study of macroeconomics. This abbreviation is most often seen in the aggregate expenditure equation, AE = C + I + G + (X - M), where C, G, and (X - M) represent expenditures by the other three macroeconomic sectors, household, business, and foreign.
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INCREASING RETURNS TO SCALE A given proportional change in all resources in the long run results in a proportional greater change in production. Increasing returns to scale exists if a firm increases ALL resources--labor, capital, and other inputs--by a given proportion (say 10 percent) and output increases by more than this proportion (that is more than 10 percent). This is one of three returns to scale. The other two are decreasing returns to scale and constant returns to scale.
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BLUE PLACIDOLA
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Today, you are likely to spend a great deal of time looking for a downtown retail store trying to buy either a how-to book on surfing the Internet or a computer that can play music and burn CDs. Be on the lookout for slow moving vehicles with darkened windows.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
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"Progress begins with the belief that what is necessary is possible. " -- Norman Cousins, editor, writer
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U
Unemployment
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