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LRAC CURVE: The common abbreviation for the long-run average cost curve, which is a curve depicting the per unit cost of producing a good or service in the long run when all inputs are variable. The long-run average cost curve can be derived in two ways. On is to plot long-run average cost, which is, long-run total cost divided by the quantity of output produced. at different output levels. The more common method, however, is as an envelope of an infinite number of short-run average total cost curves. Such an envelope is base on identifying the point on each short-run average total cost curve that provides the lowest possible average cost for each quantity of output. The long-run average cost curve is U-shaped, reflecting economies of scale (or increasing returns to scale) when negatively-sloped and diseconomies of scale (or decreasing returns to scale) when positively sloped. The minimum point (or range) on the LRAC curve is the minimum efficient scale.
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PROPORTIONAL TAX A tax in which the proportion of income paid in taxes is the same for all income levels. A proportional income tax exists if ever taxpayer pays exactly the same tax rate relative to income regardless of income level. A proportional tax is one of three alternations. The other two are progressive tax, in which the proportion of income paid in taxes is greater for higher income levels, and regressive tax, in which the proportion of income paid in taxes is smaller for higher income levels.
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PURPLE SMARPHIN
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Today, you are likely to spend a great deal of time wandering around the downtown area trying to buy either a pair of blue silicon oven mitts or a coffee cup commemorating the 2000 Olympics. Be on the lookout for mail order catalogs with hidden messages.
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Rosemary, long associated with remembrance, was worn as wreaths by students in ancient Greece during exams.
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"Success is more a function of consistent common sense than it is of genius. " -- An Wang, industrialist
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ABA
American Bankers Association, Associate in Business Administration
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