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January 13, 2026 

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AR: The abbreviation for average revenue, which is the revenue received for selling a good, per unit of output sold, found by dividing total revenue by the quantity of output. Average revenue actually goes by a simpler and more widely used term... price. Average revenue is really a fancy-schmancy term for the price received by a seller for selling a good. However, using the longer term average revenue let's us see the connection with other terms, like total revenue, marginal revenue, and quantity.

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MATERIALS BALANCE: A hard and fast rule that the total amount of stuff removed from the natural environment will be eventually returned, probably as pollution. This is based on a fundamental law of physics that says material can be neither created nor destroyed, but only transformed. During any given period (such as a year) the quantity of materials returned to the environment is the difference between the quantity extracted and the quantity used by the economy.

     See also | environment | pollution | natural resources | pollution types | scarcity rent | Pigouvian tax | recycling | Coase theorem | command and control | pollution rights market |


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MATERIALS BALANCE, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2026. [Accessed: January 13, 2026].


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INCREASING RETURNS TO SCALE

A given proportional change in all resources in the long run results in a proportional greater change in production. Increasing returns to scale exists if a firm increases ALL resources--labor, capital, and other inputs--by a given proportion (say 10 percent) and output increases by more than this proportion (that is more than 10 percent). This is one of three returns to scale. The other two are decreasing returns to scale and constant returns to scale.

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APLS

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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius looking to buy either a genuine down-filled comforter or a 200-foot blue garden hose. Be on the lookout for high interest rates.
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Paper money used by the Commonwealth of Massachusetts prior to the U.S. Revolutionary War, which was issued against the dictates of Britain, was designed by patriot and silversmith, Paul Revere.
"I can't change the direction of the wind, but I can adjust my sails to always reach my destination."

-- Jimmy Dean

APR
Annual Percentage Rate
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