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AMORTIZATION: The process of paying off a debt liability and accrued interest through a series of equal, periodic payments. Car loans and mortgages are two debts commonly paid off through amortization. Your monthly car payment, for example, partially pays for interest accrued on the outstanding balance and partly reduces that balance. Because one payment reduces the outstanding balance, each subsequent payment has a smaller portion for interest. If the proper amortization schedule has been calculated, your loan will be paid off with the last payment.

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Lesson 16: Perfect Competition | Unit 3: Doing Graphs Page: 17 of 28

Topic: Short-Run Supply <=PAGE BACK | PAGE NEXT=>

  • The short-run supply curve:

  • A perfectly competitive firm's short run supply curve is that segment of it's marginal cost curve that above lies above the average variable cost curve.
  • Three key points:

    1. A profit-maximizing firm produces the quantity of output that equates marginal revenue and marginal cost (MR = MC).
    2. A perfectly competitive firm is characterized by the equality between price and marginal revenue (P = MR).
    3. The law of diminishing marginal returns means that the marginal cost curve has a positive slope.

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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 searching the newspaper want ads looking to buy either a three-hole paper punch or decorative picture frames. Be on the lookout for jovial bank tellers.
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The word "fiscal" is derived from a Latin word meaning "moneybag."
"Think not of yourself as the architect of your career but as the sculptor. Expect to have to do a lot of hard hammering and chiseling and scraping and polishing. "

-- B. C. Forbes, founder, Forbes magazine

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