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MARGINAL PROPENSITY TO INVEST: The proportion of each additional dollar of national income that is used for investment expenditures. Or alternatively, this is the change in investment expenditures due to a change in national income. Abbreviated MPI, the marginal propensity to invest is the slope of the investment line used in the analysis of Keynesian economics. As such, it also plays a role in the slope of the aggregate expenditure line and the multiplier effect.

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AVERAGE VARIABLE COST CURVE

A curve that graphically represents the relation between average variable cost incurred by a firm in the short-run product of a good or service and the quantity produced. This curve is constructed to capture the relation between average variable cost and the level of output, holding other variables, like technology and resource prices, constant. The average variable cost curve is one of three average curves. The other two are average total cost curve and average fixed cost curve. A related curve is the marginal cost curve.

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Today, you are likely to spend a great deal of time wandering around the shopping mall looking to buy either a stretchable, flexible watch band or high-gloss photo paper that works with your printer. Be on the lookout for rusty deck screws.
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The first U.S. fire insurance company was established by Benjamin Franklin in 1752 in Philadelphia.
"Whenever you see a successful business, someone once made a courageous decision."

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