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OPPORTUNITY COST: The highest valued alternative foregone in the pursuit of an activity. This is a hallmark of anything dealing with economics--and life for that matter--because any action that you take prevents you from doing something else. The ultimate source of opportunity cost is the pervasive problem of scarcity (unlimited wants and needs, but limited resources). Whenever limited resources are used to satisfy one want or need, there are an unlimited number of other wants and needs that remain unsatisfied. Herein lies the essence of opportunity cost. Doing one thing prevents doing another.

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MARGINAL REVENUE CURVE, PERFECT COMPETITION

A curve that graphically represents the relation between the marginal revenue received by a perfectly competitive firm for selling its output and the quantity of output sold. Because a perfectly competitive firm is a price taker and faces a horizontal demand curve, its marginal revenue curve is also horizontal and coincides with its average revenue (and demand) curve. A perfectly competitive firm maximizes profit by producing the quantity of output found at the intersection of the marginal revenue curve and marginal cost curve.

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APLS

PINK FADFLY
[What's This?]

Today, you are likely to spend a great deal of time calling an endless list of 800 numbers seeking to buy either a flower arrangement for that special day for your mother or a New York Yankees baseball cap. Be on the lookout for cardboard boxes.
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Lombard Street is London's equivalent of New York's Wall Street.
"Leadership is the art of getting someone else to do something you want done because he wants to do it."

-- Dwight Eisenhower, 34th US president

MPS
Marginal Propensity to Save
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