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ECONOMIES OF SCALE: Declining long-run average cost that occurs as a firm increases all inputs and expands its scale of production. This is graphically illustrated by a negatively-sloped long-run average cost curve and typically occurs for relatively small levels of production. Economies of scale are then overwhelmed by diseconomies of scale for relatively large production levels. Together, economies of scale and diseconomies of scale cause the long-run average cost curve to be U-shaped.
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MACROECONOMIC SECTORS The four aggregate sectors of the macroeconomy--household, business, government, and foreign--that reflect four key macroeconomic functions and are responsible for four expenditures on gross domestic product. These four sectors are the primary "actors" on the macroeconomic stage. Macroeconomic theories then explain macroeconomic phenomena by exploring the interaction among these four sectors.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time at the confiscated property police auction hoping to buy either a coffee cup commemorating the 2000 Olympics or a birthday gift for your grandmother. Be on the lookout for letters from the Internal Revenue Service.
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This isn't me! What am I?
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The average bank teller loses about $250 every year.
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"Be kind and merciful. Let no one ever come to you without coming away better and happier." -- Mother Teresa of Calcutta, humanitarian
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AMEX
American Stock Exchange
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