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AGGREGATE EXPENDITURES 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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AVERAGE TOTAL COST Total cost per unit of output, found by dividing total cost by the quantity of output. When compared with price (per unit revenue), average total cost (ATC) indicates the per unit profitability of a profit-maximizing firm. Average total cost is one of three average cost concepts important to short-run production analysis. The other two are average fixed cost and average variable cost. A related concept is marginal cost.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway trying to buy either a coffee cup commemorating the moon landing or a how-to book on surfing the Internet. Be on the lookout for the last item on a shelf.
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This isn't me! What am I?
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The average length of a "business lunch" is about 36 minutes.
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"My future starts when I wake up every morning . . . Every day I find something creative to do with my life. " -- Miles Davis, musician
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PWAC
Present Worth of Annual Costs
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