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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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MONEY CHARACTERISTICS

The four primary characteristics of money are: (1) durability, (2) divisibility, (3) transportability, and (4) noncounterfeitability. Although a number of items or assets have served as money, those that best match these four characteristics are the ones that best function as money, the ones that best operate as a medium of exchange.

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BLUE PLACIDOLA
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Today, you are likely to spend a great deal of time at a garage sale trying to buy either a pair of gray heavy duty boot socks or a 50-foot blue garden hose. Be on the lookout for slightly overweight pizza delivery guys.
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In the Middle Ages, pepper was used for bartering, and it was often more valuable and stable in value than gold.
"Whenever you see a successful business, someone once made a courageous decision."

-- Peter F. Drucker, business strategist

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