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INJECTION LINE: A line used in the injection-leakage model representing the relation between non-consumption expenditures (that is, injections) and national income. The three injections are investment expenditures, government purchases, and exports. The foundation of the injection line is the investment line, which is then enhanced by adding government purchases and exports. The other part of the injection-leakage model is a line representing leakages. The intersection of the injection and leakage lines identifies equilibrium aggregate output, or Keynesian equilibrium.
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MARGINAL REVENUE, PERFECT COMPETITION The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a perfectly competitive 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 perfectly competitive firm equates marginal revenue and marginal cost.
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GREEN LOGIGUIN
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Today, you are likely to spend a great deal of time at a going out of business sale wanting to buy either a rechargeable flashlight or storage boxes for your computer software CDs. Be on the lookout for spoiled cheese hiding under your bed hatching conspiracies against humanity.
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Post WWI induced hyperinflation in German in the early 1900s raised prices by 726 million times from 1918 to 1923.
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"Adversity is another way to measure the greatness of individuals. I never had a crisis that didn't make me stronger. " -- Lou Holtz, Football Coach
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QJE
Quarterly Journal of Economics
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