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September 18, 2026 

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DISCRETIONARY INCOME: After-tax income over which a person (or the entire household sector) has more or less complete discretionary control, which can be then used for either consumption or saving. Discretionary income is most commonly measured at the macroeconomic level by disposable income.

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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 searching the newspaper want ads wanting to buy either a weathervane with a horse on top or a case of blank recordable DVDs. Be on the lookout for rusty deck screws.
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More money is spent on gardening than on any other hobby.
"As the births of living creatures at first are ill-shapen, so are all innovations, which are the births of time. "

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