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DECREASING-COST INDUSTRY: A perfectly competitive industry with a negatively-sloped long-run industry supply curve that results because expansion of the industry causes lower production cost and resource prices. For a decreasing-cost industry the entry of new firms, prompted by an increase in demand, causes the long-run average supply curve of each firm to shift downward, which decreases the minimum efficient scale of production.

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MARGINAL REVENUE

The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a 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 firm equates marginal revenue and marginal cost.

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Today, you are likely to spend a great deal of time at a crowded estate auction looking to buy either a pair of handcrafted oven mitts or a coffee table shaped like the state of Florida. Be on the lookout for mail order catalogs with hidden messages.
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A communal society, a prime component of Karl Marx's communist philosophy, was advocated by the Greek philosophy Plato.
"Ships are safe in harbor. But that is not what ships are for."

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LRAS
Long Run Aggregate Supply
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