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LONG-RUN MARGINAL COST CURVE: A graphical representation of the relationship between long-run marginal cost and the quantity of output produced. Like other marginal curves, the long-run marginal cost curve follows the average-marginal rule relative to the long-run average cost curve. In all outward appearance, the long-run marginal cost curve looks very much like the short-run marginal cost, that is, it is U-shaped. However, the U-shape is attributable to returns to scale rather than increasing and decreasing marginal returns.

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INTERNAL REVENUE SERVICE

A branch of the Department of Treasury that is responsible for collecting federal income taxes and administering the Internal Revenue Code. The Internal Revenue Service (IRS) is the office of the U.S. government that collects the tax revenue needed to purchase goods, pay administrative expenses, and finance assorted government functions. The IRS was established during the Civil War in 1862, but underwent a major overhaul in 1913 when the 16th amendment to the U.S. Constitution gave it the power to collect income taxes.

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Today, you are likely to spend a great deal of time touring the new suburban shopping complex seeking to buy either clothing for your pet iguana or a set of hubcaps. Be on the lookout for the last item on a shelf.
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In his older years, Andrew Carnegie seldom carried money because he was offended by its sight and touch.
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