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LERNER INDEX: The difference between price (p) and marginal cost (mc) as a fraction of price, that is [p-mc]/p. The Lerner index is usually taken as an indicator of market power because the larger the index, the larger the difference between price and marginal cost, that is, the larger the distance between the price and the competitive price. The Lerner index depends on the elasticity of demand. The Lerner index is also called the price-cost margin.

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INVESTMENT

The sacrifice of current benefits or rewards to pursue an activity with expectations of greater future benefits or rewards. Investment is the mechanism used to increase the economy's production capabilities and generate economic growth. Investment is typically used to mean the purchase of capital by business in anticipation of profit, which is termed investment expenditures.

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Today, you are likely to spend a great deal of time searching the newspaper want ads hoping to buy either a pair of red goulashes with shiny buckles or a handcrafted bird feeder. Be on the lookout for neighborhood pets, especially belligerent parrots.
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The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
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