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DERIVATION, AGGREGATE EXPENDITURES LINE: An aggregate expenditures line, a graphical depiction of the relation between aggregate expenditures and the level of aggregate income or production, can be derived by sequentially adding expenditures by the four macroeconomic sectors (household, business, government, and foreign). This derivation process begins with the consumption line, then adds investment, government purchases, and finally net exports. The process actually generates three alternative aggregate expenditures lines based on the number of sectors included (two sector, three sector, and four sector).

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ARC ELASTICITY

The average elasticity for discrete changes in two variables. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of initial and ending values of each variable, rather than initial values. Arc elasticity is generally calculated using the midpoint elasticity formula. The contrast to arc elasticity is point elasticity. For infinitesimally small changes in two variables, arc elasticity is the same as point elasticity.

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RED AGGRESSERINE
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Today, you are likely to spend a great deal of time touring the new suburban shopping complex looking to buy either storage boxes for your winter clothes or several magazines on time travel. Be on the lookout for malfunctioning pocket calculators.
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The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
"The world is not dangerous because of those who do harm but because of those who look at it without doing anything. "

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