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ADJUSTMENT, LONG-RUN AGGREGATE MARKET: Disequilibrium in the long-run aggregate market induces changes in the price level that restore equilibrium. If the price level is above the long-run equilibrium price level, economy-wide product market surpluses cause the price level to fall. If the price level is below the long-run equilibrium price level, economy-wide product market shortages cause the price level to rise. In both cases long-run equilibrium is restored. Price level changes induce changes in aggregate expenditures but NOT changes in real production. The reason is that long-run aggregate supply is full-employment real production, which is unaffected by the price level.
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U-SHAPED COST CURVES The family of short-run cost curves consisting of average total cost, average variable cost, and marginal cost, all of which have U-shapes. Each is U-shaped because it begins with relatively high but falling cost for small quantities of output, reaches a minimum value, then has rising cost at large quantities of output. Although the average fixed cost curve is not U-shaped, it is occasionally included with the other three just for sake of completeness.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time at a going out of business sale hoping to buy either an AC adapter that won't fry your computer or a case for your designer sunglasses. Be on the lookout for pencil sharpeners with an attitude.
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This isn't me! What am I?
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Three-forths of the gold mined each year is used to manufacture jewelry.
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"It takes generosity to discover the whole through others. If you realize you are only a violin, you can open yourself up to the world by playing your role in the concert. " -- Jacques Yves Cousteau, marine explorer
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ARP
Average Revenue Product
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