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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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INCREASING MARGINAL RETURNS In the short-run production by a firm, an increase in the variable input results in an increase in the marginal product of the variable input. Increasing marginal returns typically surface when the first few quantities of a variable input are added to a fixed input. This is one of two alternatives for marginal returns. The other is decreasing marginal returns. A related phenomenon for long-run production is increasing returns to scale.
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ORANGE REBELOON
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Today, you are likely to spend a great deal of time going from convenience store to convenience store looking to buy either a 200-foot blue garden hose or a video camera with stop action features. Be on the lookout for strangers with large satchels of used undergarments.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
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"In every man's life there lies latent energy. There is, however, a spark that, if kindled, will set the whole being afire, and he will become a human dynamo, capable of accomplishing almost anything to which he aspires. " -- James Cash Penney, retailer
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AFEA
American Farm Economic Association
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