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MARGINAL REVENUE, PERFECT COMPETITION: The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a perfectly competitive firm receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a perfectly competitive firm equates marginal revenue and marginal cost.

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SUPPLY-DRIVEN BUSINESS CYCLES

Business-cycle instability caused by changes in one or more of the determinants underlying the aggregate supply of gross domestic product--including resource quantity, resource quality, and resource price. This is one of two basic types of business cycles--the other being demand-driven business cycles. Supply-driven business cycles tend to be the less common of the two types.

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Today, you are likely to spend a great deal of time driving to a factory outlet looking to buy either storage boxes for your summer clothes or 500 feet of coaxial cable. Be on the lookout for spoiled cheese hiding under your bed hatching conspiracies against humanity.
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Potato chips were invented in 1853 by a irritated chef repeatedly seeking to appease the hard to please Cornelius Vanderbilt who demanded french fried potatoes that were thinner and crisper than normal.
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