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MACROECONOMIC SECTORS: The four aggregate sectors of the macroeconomy--household, business, government, and foreign--that reflect four key macroeconomic functions and are responsible for four expenditures on gross domestic product. These four sectors are the primary "actors" on the macroeconomic stage. Macroeconomic theories then explain macroeconomic phenomena by exploring the interaction among these four sectors.

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CONSUMER DEMAND THEORY

The branch of economics devoted to the study of consumer behavior, especially as it applies to decisions related to purchasing goods and services through markets. Consumer demand theory is largely centered on the study and analysis of the utility generated from the satisfaction of wants and needs. The key principle of consumer demand theory is the law of diminishing marginal utility, which offers an explanation for the law of demand and the negative slope of the demand curve.

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APLS

PINK FADFLY
[What's This?]

Today, you are likely to spend a great deal of time watching the shopping channel seeking to buy either a pair of designer sunglasses or looseleaf notebook paper. Be on the lookout for the last item on a shelf.
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This isn't me! What am I?

Before 1933, the U.S. dime was legal as payment only in transactions of $10 or less.
"In a restless, creative business with an emphasis on experiment and development, ideas are the lifeblood."

-- Richard Branson, Virgin Group founder

MR
Marginal Revenue
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