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ELASTICITY DETERMINANTS: Three factors that affect the numerical value of price elasticity of demand and price elasticity of supply calculations, including availability of substitutes, time period of analysis, and proportion of budget. A given good can have a different price elasticity (both demand and supply) if these three determinants change. The first two determinants are important to both price elasticity of demand and price elasticity of supply, while the third relates specifically to the price elasticity of demand. Three elasticity determinants are: availability of substitutes, time period, and proportion of budget.

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INJECTIONS LINE

A graphical representation of the relation between the level of aggregate production and one or more injections. The three injections (non-consumption expenditures on aggregate production) are investment expenditures, government purchases and exports. The injections line sequentially adds, or layers, each of these three expenditures depending on the number of sectors used in the analysis (two, three, or four). The slope of the injections line depends on which if any of the expenditures are induced by aggregate production. The injections line is combined with the leakages line (containing saving, taxes, and imports) in the Keynesian injections-leakages model.

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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club wanting to buy either a T-shirt commemorating yesterday or a pair of handcrafted oven mitts. Be on the lookout for cardboard boxes.
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The earliest known use of paper currency was about 1270 in China during the rule of Kubla Khan.
"The tragedy of life is not so much what men suffer, but rather what they miss. "

-- Thomas Carlyle, Historian

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Marginal Propensity to Save
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