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AE LINE: Another term for aggregate expenditure line, which is 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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SHORT-RUN PRODUCTION ALTERNATIVES A firm faces three production options in the short run based on a comparison between price, average total cost, and average variable cost. If price is greater than average total cost, a firm earns an economic profit by producing the quantity that equates marginal revenue with marginal cost. If price is less than average total cost but greater than average variable cost, a firm incurs an economic loss, but produces the quantity that equates marginal revenue with marginal cost. If price is less than average variable cost, a firm shuts down production in the short run, incurring an economic loss equal to total fixed cost.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time touring the new suburban shopping complex looking to buy either a package of 3 by 5 index cards, the ones without lines or a blue mechanical pencil. Be on the lookout for slightly overweight pizza delivery guys.
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More money is spent on gardening than on any other hobby.
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"The best way to cheer yourself up is to try to cheer somebody else up." -- Mark Twain
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SSRN
Social Science Research Network
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