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LAFFER CURVE: The graphical inverted-U relation between tax rates and total tax collections by government. Developed by economist Arthur Laffer, the Laffer curve formed a key theoretical foundation for supply-side economics of President Reagan during the 1980s. It is based on the notion that government collects zero revenue if the tax rate is 0% and if the tax rate is 100%. At a 100% tax rate no one has the incentive to work, produce, and earn income, so there is no income to tax. As such, the optimum tax rate, in which government revenue is maximized, lies somewhere between 0% and 100%. This generates a curve shaped like and inverted U, rising from zero to a peak, then falling back to zero. If the economy is operating to the right of the peak, then government revenue can be increased by decreasing the tax rate. This was used to justify supply-side economic policies during the Reagan Administration, especially the Economic Recovery Tax Act of 1981 (Kemp-Roth Act).

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MARKET ADJUSTMENT

The economic analysis of changes in market equilibrium caused by changes in any of the five demand determinants and/or the five supply determinants. Market adjustment comes in one of eight varieties, given that the two curves comprising the market (demand curve and supply curve) can either increase or decrease, individually or simultaneously. Four adjustments involve a shift of EITHER the demand curve OR the supply curve. The other four adjustments involve shifts of BOTH the demand curve AND the supply curve.

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Today, you are likely to spend a great deal of time at a dollar discount store wanting to buy either a dozen high trajectory optic orange golf balls or a large red and white striped beach towel. Be on the lookout for defective microphones.
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The first paper notes printed in the United States were in denominations of 1 cent, 5 cents, 25 cents, and 50 cents.
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