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RATE OF RETURN: The ratio of the additional annual income or profit generated by an investment to the cost of the investment. Here's a simple example, although the calculations are usually a great deal more involved for actual investments. If the cost of constructing a new factory is $10 million and it gives you an extra $1 million in profit each year, then its rate of return is 10 percent.

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LONG-RUN AVERAGE COST CURVE, DERIVATION

The long-run average cost curve is the envelope of an infinite number of short-run average total cost curves, with each short-run average total cost curve tangent to, or just touching, the long-run average cost curve at a single point corresponding to a single output quantity. The key to the derivation of the long-run average cost curve is that each short-run average total cost curve is constructed based on a given amount of the fixed input, usually capital. As such, when the quantity of the fixed input changes, the short-run average total cost curve shifts to a new location.

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RED AGGRESSERINE
[What's This?]

Today, you are likely to spend a great deal of time surfing the Internet hoping to buy either a green and yellow striped sweater vest or a Boston Red Sox baseball cap. Be on the lookout for celebrities who speak directly to you through your television.
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This isn't me! What am I?

The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
"He who truly knows has no occasion to shout. "

-- Leonardo da Vinci, painter, sculptor, architect, engineer

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