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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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DEMAND ELASTICITY AND TOTAL EXPENDITURE The notion that price-induced changes in total expenditure (price times quantity) depend on the relative price elasticity of demand. If demand is relatively elastic, then changes in price cause total expenditure to change in the opposite direction. If demand is relatively inelastic, then changes in price cause total expenditure to change in the same direction. If demand is unit elastic, then changes in price do not cause any change in total expenditure.
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BEIGE MUNDORTLE
[What's This?]
Today, you are likely to spend a great deal of time touring the new suburban shopping complex hoping to buy either handcrafted decorations to hang on your walls or throw pillows for your bed. Be on the lookout for door-to-door salesmen.
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In the early 1900s around 300 automobile companies operated in the United States.
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"Difficulty is the excuse history never accepts. " -- Edward R. Murrow, News broadcaster
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Walrasian Equilibrium
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