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BARTER ECONOMY: An economy that trades goods and services using barter exchanges rather than money. Barter economies originally predated the invention of money, emerging out the early stage of self-sufficiency before giving way to the use of commodity money. However, barter economies occasionally surface in modern times, especially when the public loses confidence in the monetary unit during a government crises or a period of hyperinflation.
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MARGINAL COST The change in total cost (or total variable cost) resulting from a change in the quantity of output produced by a firm in the short run. Marginal cost (MC) indicates how much total cost changes for a given change in the quantity of output. Because changes in total cost are matched by changes in total variable cost in the short run (total fixed cost is fixed), marginal cost is the change in either total cost or total variable cost. It is found by dividing the change in total cost (or total variable cost) by the change in output. Marginal cost is one of four cost concepts used in short-run production analysis. The other three are average total cost, average fixed cost, and average variable cost.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time at a dollar discount store wanting to buy either several magazines on home repairs or a remote controlled sports car with an air spoiler. Be on the lookout for telephone calls from former employers.
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The penny is the only coin minted by the U.S. government in which the "face" on the head looks to the right. All others face left.
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"One worthwhile task carried to a successful conclusion is worth half-a-hundred half-finished tasks. " -- Malcolm S. Forbes, publisher
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BPEA
Brookings Papers on Economic Activity
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