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U-SHAPED COST CURVES: The family of short-run cost curves consisting of average total cost, average variable cost, and marginal cost, all of which have U-shapes. They are U-shaped because each has high but falling cost at low quantities of output, which then reaches a minimum, then has rising cost at larger quantities of output. Although the average fixed cost curve is not U-shaped, it's occasionally included with the other three just for sake of completeness.

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WANTS

The psychological desires which make life just a little more enjoyable, but which are not biological necessities for life. Psychological wants are often contrasted with physiological needs that make life more enjoyable, but are not essential for existence.

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PURPLE SMARPHIN
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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius wanting to buy either decorative picture frames or storage boxes for your income tax returns. Be on the lookout for neighborhood pets, especially belligerent parrots.
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This isn't me! What am I?

Natural gas has no odor. The smell is added artificially so that leaks can be detected.
"To sit back and let fate play its hand out, and never influence it, is not the way man was meant to operate."

-- John Glenn, astronaut, U.S. senator

MCP
Marginal Cost Pricing
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