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A: The common notation for the "intercept" term of an equation specified as Y = a + bX. Mathematically, the a-intercept term indicates the value of the Y variable when the value of the X variable is equal to zero. Theoretically, the a-intercept is frequently used to indicate exogenous or independent influences on the Y variable, that is, influences that are independent of the X variable. For example, if Y represents consumption and X represents national income, a measures autonomous consumption expenditures.
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PERFECT COMPETITION, REALISM Perfect competition is an idealized market structure that does NOT exist in the real world. While some real world industries might come relatively close to one or two of the four key characteristics of perfect competition, none matches all four sufficiently that they can be declared PERFECTLY competitively. Some industries come close on the large number of small firms and the identical product characteristics. A few industries have relatively good, although not perfect, information about prices and technology. However, almost all industries fall far short of the perfect mobility characteristics.
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BLUE PLACIDOLA
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Today, you are likely to spend a great deal of time calling an endless list of 800 numbers looking to buy either a rim for your spare tire or decorative celebrity figurines. Be on the lookout for fairy dust that tastes like salt.
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The earliest known use of paper currency was about 1270 in China during the rule of Kubla Khan.
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"Man is born to live, not to prepare for life. " -- Boris Pasternak, writer
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Aggregate Supply-Aggregate Demand Model
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