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July 18, 2025 

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SLOPE, LONG-RUN AGGREGATE SUPPLY CURVE: The long-run aggregate supply (LRAS) curve is a vertical line with an infinite slope, reflecting the independent relation between the price level and aggregate real production. A higher price level is associated with the same real production as a lower price level. And this real production is that produced when resources are fully employed, that is, full-employment production. Real production is unaffected by the price level because prices are flexible in the long run. Long-run price flexibility ensures that ALL markets (product, financial, and resource) are in equilibrium.

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4-FIRM CONCENTRATION RATIO: The proportion of total output in an industry that's produced by the four largest firms in the industry. This is one of two common concentration ratios. The other is the eight-firm concentration ratio. The four-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and how market control is held by the four largest firms in the industry.

     See also | concentration ratio | 8-firm concentration ratio | market share | market control | oligopoly | monopolistic competition |


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SATISFACTION

The process of successfully fulfilling wants and needs. This also goes by the technical economic term utility, and is essentially synonymous with more common words, such as fulfillment, well-being, and to some degree prosperity or happiness.

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Today, you are likely to spend a great deal of time searching the newspaper want ads trying to buy either a T-shirt commemorating the 2000 Olympics or a genuine fake plastic Tiffany lamp. Be on the lookout for telephone calls from former employers.
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Three-forths of the gold mined each year is used to manufacture jewelry.
"A winner is someone who recognizes his God-given talents, works his tail off to develop them into skills, and uses those skills to accomplish his goals. "

-- Larry Bird, basketball player

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