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VARIABLE INPUT: An input whose quantity can be changed in the time period under consideration. This should be immediately compared and contrasted with fixed input. The most common example of a variable input is labor. A variable input provides the extra inputs that a firm needs to expand short-run production. In contrast, a fixed input, like capital, provides the capacity constraint in production. As larger quantities of a variable input, like labor, are added to a fixed input like capital, the variable input becomes less productive. This is, by the way, the law of diminishing marginal returns.
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ECONOMIES OF SCALE Declining long-run average cost that occurs as a firm increases all inputs and expands its scale of production. Economies of scale result from increasing returns to scale and are graphically illustrated by a negatively-sloped long-run average cost curve. Economies of scale usually occur for relatively small levels of production and are then overwhelmed by diseconomies of scale for relatively large production levels. Together, economies of scale and diseconomies of scale create a U-shaped long-run average cost curve.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time at an auction trying to buy either a stretchable, flexible watch band or high-gloss photo paper that works with your printer. Be on the lookout for broken fingernail clippers.
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This isn't me! What am I?
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Approximately three-fourths of the U.S. paper currency in circular contains traces of cocaine.
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"When one door closes another door opens; but we do often look so long and so regretfully upon the closed door, that we do not see the ones which open for us. " -- Alexander Graham Bell, inventor
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FED
Federal Reserve
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