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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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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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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time watching infomercials seeking to buy either a package of 3 by 5 index cards, the ones without lines or a blue mechanical pencil. Be on the lookout for deranged pelicans.
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Three-forths of the gold mined each year is used to manufacture jewelry.
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"My life as a writer consists of 1/8 talent and 7/8 discipline. " -- John Irving, writer
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AACP
American Assocation of Commercial Publications
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