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X-INEFFICIENCY: Cost that is higher than it needs to be because a firm is operating inefficiently. This is most often seen for firms that have a great deal of market control, especially monopoly. The lack of competition allows a business to pad it's expenses, hire unneeded employees (like relatives), goof off instead of working, and all sorts of other things that lessen production and increase cost. The business is not penalized for these actions, because market control allows the company to extract whatever price is needed to cover cost.

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FOUR-SECTOR INJECTIONS-LEAKAGES MODEL

A variation of the Keynesian injections-leakages model that adds the foreign sector to the three domestic sectors--the household sector, the business sector, and the government sector. This variation adds the foreign to the three domestic sectors (household, business, and government) in the three-sector model and provides an alternative to the four-sector aggregate expenditures (Keynesian cross). It provides the complete Keynesian representation of the macroeconomy, including the export-import interaction between the domestic economy and the foreign sector. Equilibrium is identified as the intersection between the S + T + M line and the I + G + X line. Two related variations are the two-sector injections-leakages model and the three-sector injections-leakages model.

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Today, you are likely to spend a great deal of time at a garage sale hoping to buy either a coffee cup commemorating the 1960 Presidential election or a how-to book on fixing your computer, with illustrations. Be on the lookout for small children selling products door-to-door.
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Junk bonds are so called because they have a better than 50% chance of default, carrying a Standard & Poor's rating of CC or lower.
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