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MARGINAL REVENUE, PERFECT COMPETITION: The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a perfectly competitive firm receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a perfectly competitive firm equates marginal revenue and marginal cost.
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KEYNESIAN MODEL A macroeconomic model based on the principles of Keynesian economics that is used to identify the equilibrium level of, and analyze disruptions to, aggregate production and income. This model identifies equilibrium aggregate production and income as the intersection of the aggregate expenditures line and the 45-degree line. The Keynesian model comes in three basic variations designated by the number of macroeconomic sectors included--two-sector, three-sector, and four sector. The Keynesian model is also commonly presented in the form of injections and leakages in addition to the standard aggregate expenditures format. This model is used to analyze several important topics and issues, including multipliers, business cycles, fiscal policy, and monetary policy.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time wandering around the shopping mall looking to buy either a decorative windchime with plastic or a flower arrangement for that special day for your mother. Be on the lookout for broken fingernail clippers.
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Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
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"Habit is a cable; we weave a thread of it each day, and at last we cannot break it. " -- Horace Mann, educator
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RGDP
Real Gross Domestic Product
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