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PLANNING CURVE: Another term for the long-run average cost curve (LRAC). Using the name planning curve indicates that the long-run average cost curve is used to "making plans" especially concerning the desired scale of operations of a firm. That is, in the long run a firm will seek the plant size that maximizes long-run profit by equating long-run marginal cost and marginal revenue. It will then pick out the appropriate plant size off the long-run average cost with the minimum short-run average total cost.

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MARGINAL PROPENSITY TO SAVE

The proportion of each additional dollar of household income that is used for saving. The marginal propensity to save (abbreviated MPS) is another term for the slope of the saving line and is calculated as the change in saving divided by the change in income. The MPS plays a central role in Keynesian economics. It quantifies the saving-income relation, which is the flip side of the consumption-income relation, and thus it reflects the fundamental psychological law. It is also a critical to the multiplier process. A related saving measure is the average propensity to save.

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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius seeking to buy either an AC adapter for your CD player or storage boxes for your family photos. Be on the lookout for neighborhood pets, especially belligerent parrots.
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Natural gas has no odor. The smell is added artificially so that leaks can be detected.
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