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LONG-RUN AVERAGE COST CURVE: A curve depicting the per unit cost of producing a good or service in the long run when all inputs are variable. The long-run average cost curve (usually abbreviated LRAC) can be derived in two ways. On is to plot long-run average cost, which is, long-run total cost divided by the quantity of output produced. at different output levels. The more common method, however, is as an envelope of an infinite number of short-run average total cost curves. Such an envelope is base on identifying the point on each short-run average total cost curve that provides the lowest possible average cost for each quantity of output. The long-run average cost curve is U-shaped, reflecting economies of scale (or increasing returns to scale) when negatively-sloped and diseconomies of scale (or decreasing returns to scale) when positively sloped. The minimum point (or range) on the LRAC curve is the minimum efficient scale.
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ABSTRACTION Simplifying the complexities of the real world by ignoring (hopefully) unimportant details while doing economic analysis. Abstraction is an essential feature of the scientific method. Hypothesis verification, model construction, and comparative static analysis are not possible without abstraction.
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ORANGE REBELOON
[What's This?]
Today, you are likely to spend a great deal of time at a flea market wanting to buy either super soft, super cuddly, stuffed animals or a large stuffed brown and white teddy bear. Be on the lookout for high interest rates.
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Two and a half gallons of oil are needed to produce one automobile tire.
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"Ships are safe in harbor. But that is not what ships are for." -- Anonymous
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ACRS
Accelerated Cost Recovery System
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