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DECREASING-COST INDUSTRY: A perfectly competitive industry with a negatively-sloped long-run industry supply curve that results because expansion of the industry causes lower production cost and resource prices. For a decreasing-cost industry the entry of new firms, prompted by an increase in demand, causes the long-run average supply curve of each firm to shift downward, which decreases the minimum efficient scale of production.

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MARGINAL UTILITY OF INCOME

The change in utility resulting from a given change in income. This is a specialized case of the general notion of marginal utility, which is simply the change in utility resulting from a given change in the consumption of a good. Marginal utility of income is key to identifying alternative risk preferences, including risk aversion, risk neutrality, and risk loving. These three risk preferences are indicated by three marginal utility of income possibilities, decreasing (risk aversion), increasing (risk loving), and constant (risk neutrality).

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Today, you are likely to spend a great deal of time searching for rummage sales hoping to buy either several magazines on time travel or 500 feet of telephone cable. Be on the lookout for bottles of barbeque sauce that act TOO innocent.
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Natural gas has no odor. The smell is added artificially so that leaks can be detected.
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