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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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TAXATION BASICS

Taxes are mandatory payments from members of society to governments. The total tax revenue collected from a specific tax can be identified as the product of the tax rate times the tax base. The tax base can be specified as either a physical quantity or monetary value, giving rise to two types of tax per unit tax (quantity) and ad valorem tax (value). In some cases it is useful to specify a tax rate as an average tax rate and in other cases as a marginal tax rate.

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BLUE PLACIDOLA
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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway looking to buy either a package of 3 by 5 index cards, the ones without lines or a blue mechanical pencil. Be on the lookout for letters from the Internal Revenue Service.
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The New York Stock Exchange was established by a group of investors in New York City in 1817 under a buttonwood tree at the end of a little road named Wall Street.
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