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PERFECTLY ELASTIC: An elasticity alternative in which infinitesimally small changes in price cause infinitely large changes in quantity. In other words, quantity is hyper, super, infinitely responsive to price. Any change in price, no matter how small triggers an infinite change in quantity. Perfectly elastic should be compared with other elasticity alternatives--perfectly inelastic, relatively elastic, relatively inelastic, and unit elastic.

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INTEREST-RATE EFFECT

A change in aggregate expenditures on real production, especially those made by the household and business sectors, that results because a change in the price level alters the interest rate which then affects the cost of borrowing. This is one of three effects underlying the negative slope of the aggregate demand curve associated with a movement along the aggregate demand curve and a change in aggregate expenditures. The other two are real-balance effect and net-export effect.

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Today, you are likely to spend a great deal of time searching for a specialty store hoping to buy either a video game player or an AC adapter that won't fry your computer. Be on the lookout for strangers with large satchels of used undergarments.
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A half gallon milk jug holds about $50 in pennies.
"The will to win is important, but the will to prepare is vital. "

-- Joe Paterno, football coach

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Journal of Economic Theory
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