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SHORT-RUN SUPPLY CURVE: For a perfectly competitive firm, the marginal cost curve that lies above the average variable cost curve. This segment of the marginal cost guides a perfectly competitive firm's profit maximizing production as it equates price to marginal cost. Because the marginal cost curve is positively sloped (due to the law of diminishing marginal returns), each firm's supply curve and the market supply curve are also positively sloped. The law of diminishing marginal returns thus provides an explanation for the law of supply. However, this only works for firms with NO market control. Monopoly, monopolistic competition, and oligopoly, with market control, do not achieve the same result.
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EFFECTIVE DEMAND A key conceptual notion of Keynesian economics stipulating that the aggregate expenditures on real production is based on existing or actual income rather than the income that would be generated with full employment of resources. Effective demand is embodied in the aggregate expenditures line, which has a positive slope, but a slope of less than one. This concept was proposed by Thomas Robert Malthus in the early 1800s as a counter argument to Say's law found in classical economics and then found new life when John Maynard Keynes developed his theory in the 1930s.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time at a garage sale trying to buy either a T-shirt commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or a wall poster commemorating the 2000 Olympics. Be on the lookout for door-to-door salesmen.
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This isn't me! What am I?
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A communal society, a prime component of Karl Marx's communist philosophy, was advocated by the Greek philosophy Plato.
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"Opportunities are usually disguised as hard work, so most people don't recognize them." -- Ann Landers, columnist
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MBA
Master of Business Administration
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