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X-M: The abbreviation for net exports, which is the difference between exports, goods and services produced by the domestic economy and purchased by the foreign sector, and imports, goods and services produced by the foreign sector and purchased by the domestic economy. While exports and imports important unto themselves, when combined into a single measure net exports captures the overall interaction between the foreign sector and the domestic economy. Arithmetically speaking, if exports exceed imports, then net exports are positive, and if imports exceed exports, the net exports are negative.
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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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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time searching for a specialty store looking to buy either shoe laces for your snow boots or a rim for your spare tire. Be on the lookout for spoiled cheese hiding under your bed hatching conspiracies against humanity.
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In the Middle Ages, pepper was used for bartering, and it was often more valuable and stable in value than gold.
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"We may affirm absolutely that nothing great in the world has been accomplished without passion." -- Hegel
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NSF
National Science Foundation
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