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ARC ELASTICITY: The average elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than only initial values. Arc elasticity is generally calculated using the midpoint formula. Arc elasticity should be compared with point elasticity. For infinitesimally small changes in variables A and B, arc elasticity is the same as point elasticity.

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AD VALOREM TAX

A tax specified as a percentage of the price or value of a good, service, asset, or other activity. Ad valorem taxes tend to be broad based, imposed on activities such as income and retail sales. In fact, the two most important ad valorem taxes are income taxes and sales taxes. People pay a percentage of their incomes in income taxes or a percentage or the value of their purchases in sales taxes, regardless of the amount of time spent working or the quantities of goods purchases. An alternative is a per unit tax, with is a tax specified as a percentage of the physical quantity of a good.

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Today, you are likely to spend a great deal of time searching for rummage sales looking to buy either a replacement remote control for your television or a replacement nozzle for your shower. Be on the lookout for malfunctioning pocket calculators.
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Much of the $15 million used by the United States to finance the Louisiana Purchase from France was borrowed from European banks.
"Success without honor is an unseasoned dish; it will satisfy your hunger, but it won't taste good. "

-- Joe Paterno, Football coach

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