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OLIGOPOLY AND MONOPOLY: Oligopoly and monopoly have some similarities, both tend to be relatively large and possess significant market control, but also have a few important differences, oligopoly market has more than one firm. The dividing line between oligopoly and monopoly, however, can be blurred due to the closeness of substitutes and the inclination of oligopoly firms to collude.

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VARIABLE COST

In general, cost that changes with changes in the quantity of output produced. More specifically, variable cost is combined with the adjectives "total" and "average" to indicate the overall level of variable cost or the per unit variable cost. Variable cost depends on the amount produced. If there is no production, then there is no variable cost.

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Today, you are likely to spend a great deal of time surfing the Internet looking to buy either a T-shirt commemorating the first day of spring or a coffee cup commemorating last Friday (you know why). Be on the lookout for pencil sharpeners with an attitude.
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Only 1% of the U.S. population paid income taxes when the income tax was established in 1914.
"Habit is a cable; we weave a thread of it each day, and at last we cannot break it. "

-- Horace Mann, educator

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