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PERFECT COMPETITION AND EFFICIENCY: Perfect competition is the idealized market structure that achieves an efficient allocation of resources. The conditions of perfect competition, including (1) large number of small firms, (2) identical products sold by all firms, (3) freedom of entry into and exit out of the industry, and (4) perfect knowledge of prices and technology, ensure that perfect competition efficiently allocates resources. This is in fact the purpose of perfect competition: a market structure that illustrates perfection, the best of all possible resource allocation worlds. The real world falls short of this perfection.
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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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RED AGGRESSERINE
[What's This?]
Today, you are likely to spend a great deal of time strolling through a department store trying to buy either a 50-foot blue garden hose or a turbo-powered vacuum cleaner. Be on the lookout for slightly overweight pizza delivery guys.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
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"Long-range goals keep you from being frustrated by short-term failures " -- J. C. Penney, Retailer
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MAR
Minimum Acceptable Revenue
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