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PER UNIT TAX: A tax that is specified as a fixed amount for each unit of a good sold. Federal excise taxes on gasoline and cigarettes fall into this per unit tax category.

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ARC ELASTICITY

The average elasticity for discrete changes in two variables. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of initial and ending values of each variable, rather than initial values. Arc elasticity is generally calculated using the midpoint elasticity formula. The contrast to arc elasticity is point elasticity. For infinitesimally small changes in two variables, arc elasticity is the same as point elasticity.

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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club looking to buy either storage boxes for your summer clothes or 500 feet of coaxial cable. Be on the lookout for defective microphones.
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The first paper currency used in North America was pasteboard playing cards "temporarily" authorized as money by the colonial governor of French Canada, awaiting "real money" from France.
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