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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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PERFECT COMPETITION, DEMAND

The demand curve for the output produced by a perfectly competitive firm is perfectly elastic at the going market price. The firm can sell all of the output that it wants at this price because it is a relatively small part of the market. As a price taker, the firm has no ability to charge a higher price and no reason to charge a lower one. The market price facing a perfectly competitive firm is also average revenue and, most important, marginal revenue.

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PINK FADFLY
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Today, you are likely to spend a great deal of time at the confiscated property police auction wanting to buy either a weathervane with a chicken on top or a flower arrangement with daisies and carnations for your uncle. Be on the lookout for defective microphones.
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The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
"Anyone who has never made a mistake has never tried anything new. "

-- Albert Einstein, physicist

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Latin American Economic System
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