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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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AGGREGATE EXPENDITURES

The total expenditures on gross domestic product undertaken in a given time period by the four sectors--household, business, government, and foreign. Expenditures made by each of these sectors are commonly termed consumption expenditures, investment expenditures, government purchases, and net exports. Aggregate expenditures (AE) are a cornerstone in the study of macroeconomics, playing critical roles in Keynesian economics, aggregate market analysis, and to a lesser degree, monetarism. In particular, aggregate expenditures are combined with the price level as aggregate demand.

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Today, you are likely to spend a great deal of time strolling through a department store hoping to buy either a birthday greeting card for your grandmother or a coffee cup commemorating yesterday. Be on the lookout for poorly written technical manuals.
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Woodrow Wilson's portrait adorned the $100,000 bill that was removed from circulation in 1929. Woodrow Wilson was removed from circulation in 1924.
"Life is not a 'brief candle.' It is a splendid torch that I want to make burn as brightly as possible before handing it on to future generations. "

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