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Among economic models, the circular-flow diagram is unusual in that it


A) drastically simplifies the real world.
B) features more than one type of market.
C) features flows of dollars.
D) does not involve mathematics.

E) None of the above
F) B) and D)

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In the ordered pair (10,30), 10 is the y-coordinate and 30 is the z-coordinate.

A) True
B) False

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The effects of foreign competition on the U.S. textile industry would be studied by a microeconomist rather than a macroeconomist.

A) True
B) False

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When a variable that is named on an axis of a graph changes, the curve shifts.

A) True
B) False

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The production possibilities frontier is a graph that shows the various combinations of output that an economy


A) should produce.
B) wants to produce.
C) can produce.
D) demands.

E) All of the above
F) B) and C)

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In the circular-flow diagram, which of the following items represents a payment for a factor of production?


A) interest
B) capital
C) spending by households on goods
D) spending by households on services

E) A) and B)
F) A) and C)

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A demand curve shows the relationship


A) between income and quantity demanded.
B) between price and income.
C) between price and quantity demanded.
D) among income, price, and quantity demanded.

E) B) and C)
F) A) and D)

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Economists believe that production possibilities frontiers


A) never have a bowed shape.
B) rarely have a bowed shape.
C) often have a bowed shape.
D) always have a bowed shape.

E) A) and D)
F) B) and C)

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