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AGGREGATE EXPENDITURE EQUATION: An equation indicating that aggregate expenditures (AE) are the sum of consumption expenditures (C), investment expenditures (I), government purchases (G), and net exports (X-M), stated as: AE = C + I + G + (X-M). This equation surfaces in the Keynesian economic income-expenditure model in the form of the aggregate expenditures line. However, it's also central throughout the study of macroeconomics, including aggregate demand and the measurement of gross domestic product.
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The CLASS*portal provides access to instructional materials for two courses -- Introductory Macroeconomics and Introductory Microeconomics. Use the information provided by the CLASS*portal as you see fit.
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ELASTICITY The relative response of one variable to changes in another variable. Elasticity is commonly used in the study of market exchanges to identify the relative response of quantity (demanded and supplied) to changes in price. The phrase "relative response" is best interpreted as the percentage change, such as, the percentage change in quantity measured against the percentage change in price. The most common notions of elasticity are the price elasticity of demand and the price elasticity of supply. Other notable economic elasticities are the income elasticity of demand and the cross elasticity of demand.
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Stealing A Few Moments For CRIMELike most consumers, workers, and taxpayers, I engage in market exchanges for a lot of stuff -- food, labor, shelter, entertainment, confectionery products. But as I wandered through the peaceful community of Shady Valley, U. S. of A., I entered a "market" that I would have rather avoided. That's right, as the title indicates, I exchange some crime. I was mugged -- relieved of several valuable possessions -- right in front of the Shady Valley police station. I did the selling and my mugger did the "buying." While my part in the exchange was involuntary, the mugger's part was quite voluntary. In fact, the perpetrator of this crime acted much like any consumer headed to Natural Ned's Nursery and Garden Center in search of a creeping juniper. Let's see why?
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BROWN PRAGMATOX
[What's This?]
Today, you are likely to spend a great deal of time at a crowded estate auction trying to buy either a decorative windchime with plastic or a flower arrangement for that special day for your mother. Be on the lookout for slightly overweight pizza delivery guys.
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This isn't me! What am I?
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Only 1% of the U.S. population paid income taxes when the income tax was established in 1914.
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"To sit back and let fate play its hand out, and never influence it, is not the way man was meant to operate." -- John Glenn, astronaut, U.S. senator
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Aggregate Supply-Aggregate Demand Model
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