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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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FACTOR SUPPLY CURVE

A graphical representation of the relation between the price to a factor of production and quantity of the factor supplied, holding all ceteris paribus factor supply determinants constant. The factor supply curve is one half of the factor market. The other half is the factor demand curve.

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Today, you are likely to spend a great deal of time searching the newspaper want ads trying to buy either a video camera with stop action features or one of those memory foam pillows. Be on the lookout for telephone calls from former employers.
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The 22.6% decline in stock prices on October 19, 1987 was larger than the infamous 12.8% decline on October 29, 1929.
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