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INCOME-EXPENDITURE MODEL: A macroeconomic model, which captures the essence of Keynesian economics, is based on the equality between total income generated from gross domestic product and total expenditures on gross domestic product. The cornerstone of the income-expenditure model is the consumption function, which relates household consumption expenditures to income and gives rise to the aggregate expenditure line with the addition of investment, government purchases, and net exports. The intersection between the aggregate expenditure line at the 45-degree identifies equilibrium.
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GOOD TYPES The economy produces four distinct types of goods based on two key characteristics -- consumption rivalry and nonpayer excludability. Consumption rivalry arises if consumption of a good by one person prevents another from also consuming. Nonpayer excludability means potential consumers who do not pay for a good can be excluded from consuming. Private goods are rival in consumption and easily subject to the exclusion of nonpayers. Public goods are nonrival in consumption and the exclusion of nonpayers is virtually impossible. Near-public goods are nonrival in consumption and easily subject to exclusion. Common-property goods are rival in consumption and not easily subject to exclusion. Private goods can be efficiently exchanged through markets. Public, near-public and common-property goods cannot, but require some degree of government involvement for efficiency.
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ORANGE REBELOON
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads looking to buy either a travel case for you toothbrush or a looseleaf notebook binder. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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This isn't me! What am I?
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John Maynard Keynes was born the same year Karl Marx died.
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"The roots of education are bitter, but the fruit is sweet." -- Aristotle, philosopher
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LRMC
Long Run Marginal Cost
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