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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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MARGINAL PRODUCTIVITY THEORY

A theory used to analyze the profit-maximizing quantity of inputs (that is, the services of factor of productions) purchased by a firm in the production of output. Marginal-productivity theory indicates that the demand for a factor of production is based on the marginal product of the factor. In particular, a firm is generally willing to pay a higher price for an input that is more productive and contributes more to output. The demand for an input is thus best termed a derived demand.

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APLS

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Today, you are likely to spend a great deal of time going from convenience store to convenience store trying to buy either a large red and white striped beach towel or a bottle of blackcherry flavored spring water. Be on the lookout for gnomes hiding in cypress trees.
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Lombard Street is London's equivalent of New York's Wall Street.
"Well done is better than well said. "

-- Benjamin Franklin, statesman, inventor

ACCR
Annual Cost of Capital Recovery
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