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PERFECT COMPETITION AND SHORT-RUN SUPPLY CURVE: A perfectly competitive firm's supply curve is that portion of its' marginal cost curve that lies above the minimum of the average variable cost curve. A perfectly competitive firm maximizes profit by producing the quantity of output that equates price and marginal cost. As such, the firm moves along it's marginal cost curve in response to alternative prices. Because the marginal cost curve is positively sloped due to the law of diminishing marginal returns, the firm's supply curve is also positively sloped.

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DEMAND INCREASE

An increase in the willingness and ability of buyers to purchase a good at the existing price, illustrated by a rightward shift of the demand curve. An increase in demand is caused by a change in a demand determinant and results in an increase in equilibrium quantity and an increase in equilibrium price. A demand increase is one of two demand shocks to the market. The other is a demand decrease.

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Today, you are likely to spend a great deal of time at the confiscated property police auction seeking to buy either a pair of designer sunglasses or looseleaf notebook paper. Be on the lookout for mail order catalogs with hidden messages.
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This isn't me! What am I?

Lewis Carroll, the author of Alice in Wonderland, was the pseudonym of Charles Dodgson, an accomplished mathematician and economist.
"An idea is never given to you without you being given the power to make it reality."

-- Richard Bach, Author

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