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RESERVE REQUIREMENTS: Rules by the Federal Reserve System governing the amount of bank reserves that banks must keep to back up their deposits. Legal reserve requirements came about because banks that practice fractional-reserve banking are sometimes inclined to make too many interest-paying loans and neglect to keep enough reserves on hand to pay their depositors. In principle, the Fed can alter reserve requirements to control the money supply. In practice, however, the Fed prefers to use open market operations or the discount rate.

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AVERAGE FACTOR COST AND MARGINAL FACTOR COST

A mathematical connection between average factor cost and marginal factor cost stating that the change in the average factor cost depends on a comparison between average factor cost and marginal factor cost. For perfect competition, with no market control, marginal factor cost is equal to average factor cost, and average factor cost does not change. For monopsony and other firms with market control, marginal factor cost is greater than average factor cost, and average factor cost rises.

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Today, you are likely to spend a great deal of time touring the new suburban shopping complex wanting to buy either a Boston Red Sox baseball cap or a square lamp shade with frills along the bottom. Be on the lookout for celebrities who speak directly to you through your television.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
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