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FACTOR DEMAND AND MARGINAL REVENUE PRODUCT: For a firm that hires the services of a factor in a perfectly competitive factor market, the factor demand curve is that portion of the marginal revenue product curve that lies below the average revenue product curve. The relation between marginal revenue product and factor demand for a perfectly competitive firm is comparable to the relation between marginal cost and short-run supply. A perfectly competitive firm maximizes profit by hiring the quantity of a factor that equates factor price and marginal revenue product. As such, the firm moves along it's marginal revenue product curve in response to alternative factor prices.
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AGGREGATE EXPENDITURES LINE A graphical depiction of the relation between aggregate expenditures by the four macroeconomic sectors (household, business, government, and foreign) and the level of aggregate income or production. In Keynesian economics, the aggregate expenditures line is the essential component of the Keynesian cross analysis used to identify equilibrium income and production. Like any straight line, the aggregate expenditures line is characterized by vertical intercept, which indicates autonomous expenditures, and slope, which indicates induced expenditures. The aggregate expenditures line used in Keynesian economics is derived by adding or stacking investment, government purchases, and net exports to the consumption line.
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Parker Brothers, the folks who produce the Monopoly board game, prints more Monopoly money each year than real currency printed by the U.S. government.
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"Trust yourself. You know more than you think you do. " -- Benjamin Spock, doctor
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ECU
European Currency Unit
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