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MARGINAL COST CURVE: A curve that graphically represents the relation between marginal cost incurred by a firm in the short-run product of a good or service and the quantity of output produced. This curve is constructed to capture the relation between marginal cost and the level of output, holding other variables, like technology and resource prices, constant. The marginal cost curve is U-shaped. Marginal cost is relatively high at small quantities of output, then as production increases, declines, reaches a minimum value, then rises. This shape of the marginal cost curve is directly attributable to increasing, then decreasing marginal returns (and the law of diminishing marginal returns).
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LONG-RUN AVERAGE COST CURVE, DERIVATION The long-run average cost curve is the envelope of an infinite number of short-run average total cost curves, with each short-run average total cost curve tangent to, or just touching, the long-run average cost curve at a single point corresponding to a single output quantity. The key to the derivation of the long-run average cost curve is that each short-run average total cost curve is constructed based on a given amount of the fixed input, usually capital. As such, when the quantity of the fixed input changes, the short-run average total cost curve shifts to a new location.
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BUSINESS As UsualIn the same mini-mall with Dr. Nova Cain's dental offices and Smilin' Ted's All Comers Insurance Agency, resides Manny Mustard's House of Sandwiches -- one of those small, out-of-the-way, off-the-wall sorts of restaurants that has great food, excellent service, and plenty of atmosphere. Manny, the proprietor, is a good friend of mine who's struggling to turn his dream of restauranteering into reality. His restauranteering dream doesn't stop with one small, out-of-the-way, off-the-way restaurant with great food, excellent service, and atmosphere. No, Manny is shooting for a nation-wide chain of Manny Mustard's House of Sandwiches. He wants to go from being an overworked, underappreciated member of the third estate to a member of the second estate who overworks and underappreciates others. To help out my good friend Manny, let's take a long, hard look at the differences between small business and the larger, Fortune 500 kind.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time watching infomercials seeking to buy either an electric coffee pot with automatic shutoff or a brown leather attache case. Be on the lookout for crowded shopping malls.
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This isn't me! What am I?
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Helping spur the U.S. industrial revolution, Thomas Edison patented nearly 1300 inventions, 300 of which came out of his Menlo Park "invention factory" during a four-year period.
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"The time to repair the roof is when the sun is shining." -- John F. Kennedy, 35th U. S. president
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MR
Marginal Revenue
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