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THREE-SECTOR, THREE-MARKET CIRCULAR FLOW: A circular flow model of the macroeconomy containing three sectors (business, household, and government) and three markets (product, factor, and financial) that illustrates the continuous movement of the payments for goods and services between producers and consumers, with particular emphasis on taxes and government purchases. Other circular models are two-sector, two-market circular flow; two-sector, three-market circular flow; and four-sector, three-market circular flow.

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MARGINAL REVENUE CURVE, PERFECT COMPETITION

A curve that graphically represents the relation between the marginal revenue received by a perfectly competitive firm for selling its output and the quantity of output sold. Because a perfectly competitive firm is a price taker and faces a horizontal demand curve, its marginal revenue curve is also horizontal and coincides with its average revenue (and demand) curve. A perfectly competitive firm maximizes profit by producing the quantity of output found at the intersection of the marginal revenue curve and marginal cost curve.

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PURPLE SMARPHIN
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Today, you are likely to spend a great deal of time at a crowded estate auction hoping to buy either a T-shirt commemorating yesterday or a pair of handcrafted oven mitts. Be on the lookout for fairy dust that tastes like salt.
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More money is spent on gardening than on any other hobby.
"Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus."

-- Alexander Graham Bell, inventor

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