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LONG-RUN ADJUSTMENT, PERFECT COMPETITION: The combined adjustment of a perfectly competitive industry and of each firm in the industry to an equilibrium condition that eliminates all economic profits and losses, while each firm selects a factor size that maximizes profit. This adjustment process involves two parts. One is the adjustment of each perfectly competitive firm to the appropriate factory size that maximizes long-run profit. The other is the entry of firms into the industry or exit of firms out of the industry, to eliminated economic profits or economic losses. The end result of this long-run adjustment is a multi-faceted equilibrium condition: P = AR = MR = MC = LRMC = ATC = LRAC
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AGGREGATE DEMAND The total real expenditures on final goods and services produced in the domestic economy that buyers are willing and able to undertake at different price levels, during a given time period (usually a year). Aggregate demand, usually abbreviated AD, is an inverse relation between price level and aggregate expenditures. This is one half of the AS-AD (aggregate market) analysis. The other half is aggregate supply. Aggregate demand consists of four aggregate expenditures--consumption expenditures, investment expenditures, government purchases, and net exports--made by the four macroeconomic sectors--household, business, government, and foreign.
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GRAY SKITTERY
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Today, you are likely to spend a great deal of time at a flea market trying to buy either a how-to book on fine dining or a coffee cup commemorating the first day of winter. Be on the lookout for celebrities who speak directly to you through your television.
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Only 1% of the U.S. population paid income taxes when the income tax was established in 1914.
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"I have no expectation of making a hit every time I come to bat. What I seek is the highest possible batting average." -- President Franklin Delano Roosevelt
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EJ
Economic Journal
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