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VARIABLE INPUT: An input whose quantity can be changed in the time period under consideration. This should be immediately compared and contrasted with fixed input. The most common example of a variable input is labor. A variable input provides the extra inputs that a firm needs to expand short-run production. In contrast, a fixed input, like capital, provides the capacity constraint in production. As larger quantities of a variable input, like labor, are added to a fixed input like capital, the variable input becomes less productive. This is, by the way, the law of diminishing marginal returns.
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AVERAGE REVENUE, PERFECT COMPETITION The revenue received for selling a good per unit of output sold, found by dividing total revenue by the quantity of output. Average revenue often goes by a simpler and more widely used term... price. For a perfectly competitive firm average revenue is also equal to marginal revenue. Average revenue for a perfectly competitive firm is often depicted by a horizontal average revenue curve.
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PINK FADFLY [What's This?]
Today, you are likely to spend a great deal of time flipping through the yellow pages seeking to buy either one of those "hang in there" kitty cat posters or a velvet painting of Elvis Presley. Be on the lookout for neighborhood pets, especially belligerent parrots. Your Complete Scope
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The average bank teller loses about $250 every year.
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"Laughter is the shortest distance between two people. " -- Victor Borge, musician, humorist
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FTSE-100 Financial Times Stock Exchange 100 stock index (UK)
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