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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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PERFECT COMPETITION, SHORT-RUN PRODUCTION ANALYSIS

A perfectly competitive firm produces the profit-maximizing quantity of output that equates marginal revenue and marginal cost. This production level can be identified using total revenue and cost, marginal revenue and cost, or profit. Because a perfectly competitive firm faces a perfectly elastic demand curve, it efficiently allocates resources by equating price and marginal cost. In addition, the marginal cost curve above the average variable cost curve is the perfectly competitive firm's short-run supply curve.

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Today, you are likely to spend a great deal of time driving to a factory outlet trying to buy either a rim for your spare tire or decorative celebrity figurines. Be on the lookout for spoiled cheese hiding under your bed hatching conspiracies against humanity.
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
"Try not to become a man of success, but rather try to become a man of value. "

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