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ELASTIC DEMAND: Relatively small changes in demand price cause relatively larger changes in quantity demanded. Elastic demand means that changes in the quantity demanded are relatively responsive to changes in the demand price. An elastic demand has a coefficient of elasticity greater than one (the negative value is ignored). You might want to compare elastic demand to inelastic demand, elastic supply, and inelastic supply.

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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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Today, you are likely to spend a great deal of time searching for rummage sales wanting to buy either an electric coffee pot with automatic shutoff or a brown leather attache case. Be on the lookout for letters from the Internal Revenue Service.
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Three-forths of the gold mined each year is used to manufacture jewelry.
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