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PERFECT COMPETITION, LONG-RUN ADJUSTMENT: A perfectly competitive industry undertakes a two-part adjustment to equilibrium in the long run. One is the adjustment of each perfectly competitive firm to the appropriate factory size that maximizes long-run profit. The other is the entry of firms into the industry or exit of firms out of the industry, to eliminate economic profit or economic loss. The end result of this long-run adjustment is a multi-faceted equilibrium condition that price is equal to marginal cost and average cost (both short run and long run).
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MARGINAL PROPENSITY TO INVEST The change in business investment expenditures induced by a change in income or production (national income or gross domestic product). The marginal propensity to invest (abbreviated MPI) is another term for the slope of the investment line and is calculated as the change in investment divided by the change in income or production. The MPI plays a role in Keynesian economics. It augments the slope of the aggregate expenditures line and is part to the multiplier process. A related marginal measure is the marginal propensity to consume.
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RED AGGRESSERINE
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads trying to buy either a set of tires or a birthday gift for your grandfather. Be on the lookout for celebrities who speak directly to you through your television.
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The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
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"Education is the ability to listen to almost anything without losing your temper or your self-confidence. " -- Robert Frost
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WPO
Weakly Pareto Optimal
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