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PERFECT COMPETITION AND DEMAND: The demand curve for the output produced by a perfectly competitive firm is perfectly elastic at the going market price. The firm can sell all of the output that it wants at this price because it is a relatively small part of the market. As a price taker, the firm has no ability to charge a higher price and no reason to charge a lower one. The market price facing a perfectly competitive firm is also the firm's average revenue and, most importantly, its marginal revenue.
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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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BEIGE MUNDORTLE
[What's This?]
Today, you are likely to spend a great deal of time watching the shopping channel trying to buy either a handcrafted bird feeder or a New York Yankees baseball cap. Be on the lookout for fairy dust that tastes like salt.
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This isn't me! What am I?
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A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
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"The roots of education are bitter, but the fruit is sweet." -- Aristotle
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JET
Journal of Economic Theory
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