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LONG-RUN PRODUCTION: An analysis of the production decision made by a firm in the long run. The central feature of this long-run analysis is returns to scale, which results in the long run even though all inputs are variable. Returns to scale are reflected in the long-run average cost curve as either economies to scale or diseconomies to scale.
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SAVING-INVESTMENT MODEL A variation of the Keynesian injections-leakages model that includes the two private sectors, the household sector and the business sector. This variation, more formally termed the two-sector injections-leakages model, captures the interaction between induced saving (and indirectly induced consumption expenditures) and autonomous investment expenditures. This model provides an alternative to the two-sector aggregate expenditures (Keynesian cross) analysis of the macroeconomy, including equilibrium, disequilibrium, and the multiplier. Equilibrium is identified as the intersection between the saving line and the investment line. Two related variations are the three-sector injections-leakages model and the four-sector injections-leakages model.
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It's estimated that the U.S. economy has about $20 million of counterfeit currency in circulation, less than 0.001 perecent of the total legal currency.
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"In a restless, creative business with an emphasis on experiment and development, ideas are the lifeblood." -- Richard Branson, Virgin Group founder
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MC
Marginal Cost
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