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KEYNESIAN AGGREGATE EXPENDITURE MODEL: The generic term for several graphical models used to analysis the basic components of Keynesian economics and to identify Keynesian equilibrium as the intersection of the aggregate expenditures line and the 45-degree line. Differences among the specific models are based on which sectors are included (household, business, government, and foreign) and whether expenditures are induced or autonomous.

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PERFECT COMPETITION, PROFIT MAXIMIZATION

A perfectly competitive firm is presumed to produce the quantity of output that maximizes economic profit--the difference between total revenue and total cost. This production decision can be analyzed directly with economic profit, by identifying the greatest difference between total revenue and total cost, or by the equality between marginal revenue and marginal cost.

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APLS

PURPLE SMARPHIN
[What's This?]

Today, you are likely to spend a great deal of time touring the new suburban shopping complex trying to buy either several magazines on computer software or a T-shirt commemorating the second moon landing. Be on the lookout for neighborhood pets, especially belligerent parrots.
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Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
"Few things help an individual more than to place responsibility upon them and to let them know that you trust them."

-- Booker T. Washington

LRAC
Long Run Average Cost
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