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MARGINAL COST: The change in total cost (or total variable cost) resulting from a change in the quantity of output produced by a firm in the short run. Marginal cost indicates how much total cost changes for a give change in the quantity of output. Because changes in total cost are matched by changes in total variable cost in the short run (remember total fixed cost is fixed), marginal cost is the change in either total cost or total variable cost. Marginal cost, usually abbreviated MC, is found by dividing the change in total cost (or total variable cost) by the change in output.

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FEDERAL DEFICIT, AGGREGATE EXPENDITURES DETERMINANT

One of several specific aggregate expenditures determinants assumed constant when the aggregate expenditures line is constructed, and that shifts the aggregate expenditures line when it changes. An increase in the federal deficit causes an increase (upward shift) of the aggregate expenditures line. A decrease in the federal deficit causes a decrease (downward shift) of the aggregate expenditures line. Other notable aggregate expenditures determinants include consumer confidence, financial wealth, inflationary expectations, and exchange rates.

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Today, you are likely to spend a great deal of time browsing about a thrift store wanting to buy either a small, foam rubber football or an instructional DVD on learning to the play the oboe. Be on the lookout for florescent light bulbs that hum folk songs from the sixties.
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Approximately three-fourths of the U.S. paper currency in circular contains traces of cocaine.
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