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AGGREGATE EXPENDITURE LINE: A line representing the relation between aggregate expenditures and gross domestic product used in the Keynesian cross. The aggregate expenditure line is obtained by adding investment expenditures, government purchases, and net exports to the consumption line. As such, the slope of the aggregate expenditure line is largely based on the slope of the consumption line (which is the marginal propensity to consume), with adjustments coming from the marginal propensity to invest, the marginal propensity for government purchases, and the marginal propensity to import. The intersection of the aggregate expenditures line and the 45-degree line identifies the equilibrium level of output in the Keynesian cross.
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ECONOMIES OF SCALE Declining long-run average cost that occurs as a firm increases all inputs and expands its scale of production. Economies of scale result from increasing returns to scale and are graphically illustrated by a negatively-sloped long-run average cost curve. Economies of scale usually occur for relatively small levels of production and are then overwhelmed by diseconomies of scale for relatively large production levels. Together, economies of scale and diseconomies of scale create a U-shaped long-run average cost curve.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time at a dollar discount store wanting to buy either an instructional DVD on learning to the play the oboe or a small, foam rubber football. Be on the lookout for attractive cable television service repair people.
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Natural gas has no odor. The smell is added artificially so that leaks can be detected.
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"You don't have to see the top of the staircase to take the first step.¾ " -- Martin Luther King, civil rights leader
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BIS
Bank for International Settlements
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