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ENTRY BARRIER: An institutional, government, technological, or economic restriction on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.
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MARGINAL REVENUE The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a firm receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a firm equates marginal revenue and marginal cost.
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The Odds On GAMBLINGI'm sure there's a great philosopher somewhere who once uttered the words, "Life's a contradiction and we're all a bunch of hypocrites." Take me for example. Just this morning I walked by Smilin' Ted's All-Comers Insurance Agency to drop off my annual shoe insurance premium (for protection against blowouts), then made a pit stop at Master Sprocket's convenience store where I plopped down five dollars on five (count 'em, five) Super Luck-O Multi-State Lottery tickets. Within a space of two blocks and twenty minutes I bought $37.56 worth of shoe insurance to avoid risk and then spent another $5 to take on some risk. Am I a walking contradiction, or what?
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads looking to buy either a wall poster commemorating the first day of winter or blue cotton balls. Be on the lookout for rusty deck screws.
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This isn't me! What am I?
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The earliest known use of paper currency was about 1270 in China during the rule of Kubla Khan.
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"A winner is someone who recognizes his God-given talents, works his tail off to develop them into skills, and uses those skills to accomplish his goals. " -- Larry Bird, basketball player
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ACT
Advance Corporation Tax
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