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LRMC: The abbreviation for long-run marginal cost, which is the change in the long-run total cost of producing a good or service resulting from a change in the quantity of output produced. Like all marginals, long-run marginal cost is the increment in the corresponding total. What's most notable about long-run marginal cost, however, is that we are operating in the long run. Unlike the short run, in which at least one input is fixed, there are no fixed inputs in the long run. As such, there is only variable cost. This means that long-run marginal cost is the result of changes in the cost of all inputs.
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FOUR-FIRM CONCENTRATION RATIO The proportion of total output in an industry produced by the four largest firms in an industry. This is one of two common concentration ratios. The other is the eight-firm concentration ratio. Another related measure is the Herfindahl index. The four-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and the extent of market control held by the four largest firms in the industry.
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ORANGE REBELOON
[What's This?]
Today, you are likely to spend a great deal of time wandering around the downtown area seeking to buy either an electric coffee pot with automatic shutoff or a brown leather attache case. Be on the lookout for the happiest person in the room.
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This isn't me! What am I?
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
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"Love looks through a telescope; envy, through a microscope. " -- Josh Billings, humorist
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APC
Average Propensity to Consume
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