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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 indicates how much total cost changes for a give change in the quantity of output. Because changes in total cost are matched by changes in total variable cost in the short run (remember total fixed cost is fixed), marginal cost is the change in either total cost or total variable cost. Marginal cost, usually abbreviated MC, is found by dividing the change in total cost (or total variable cost) by the change in output.

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INSTITUTION

An established method or way of performing an activity that is widely accepted throughout society. Institutions provide the rules, guidelines, and structure needed to carry out day-to-day economic activities, such as production, consumption, and exchange.

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APLS

PURPLE SMARPHIN
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Today, you are likely to spend a great deal of time flipping through mail order catalogs trying to buy either a weathervane with a chicken on top or a flower arrangement with daisies and carnations for your uncle. Be on the lookout for cardboard boxes.
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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.
"There are no shortcuts to any place worth going. "

-- Beverly Sills, Opera singer

LRTC
Long Run Total Cost
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