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MARGINAL COST CURVE: A curve that graphically represents the relation between marginal cost incurred by a firm in the short-run product of a good or service and the quantity of output produced. This curve is constructed to capture the relation between marginal cost and the level of output, holding other variables, like technology and resource prices, constant. The marginal cost curve is U-shaped. Marginal cost is relatively high at small quantities of output, then as production increases, declines, reaches a minimum value, then rises. This shape of the marginal cost curve is directly attributable to increasing, then decreasing marginal returns (and the law of diminishing marginal returns).

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PLANNED ECONOMY

An economy, or economic system, that relies heavily on central planning by government to allocate resources and answer the three basic questions of allocation. A planned economy is often a type of command economy, in which government uses its coercive powers to implement central planning allocation decisions.

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GREEN LOGIGUIN
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Today, you are likely to spend a great deal of time watching infomercials hoping to buy either a coffee cup commemorating the moon landing or a how-to book on surfing the Internet. Be on the lookout for mail order catalogs with hidden messages.
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The first paper notes printed in the United States were in denominations of 1 cent, 5 cents, 25 cents, and 50 cents.
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