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According to the text, gift giving in kind


A) should happen more often if people were rational.
B) cannot be easily explained by the rational choice model.
C) happens only because people expect to get gifts in return.
D) always increase consumer welfare.

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A diminishing marginal rate of substitution implies that indifference curves are


A) convex.
B) concave.
C) straight lines.
D) positively sloped.

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An increase in the price of one good will cause


A) an inward rotation of the budget curve.
B) an outward rotation of the budget curve.
C) a parallel shift in the budget curve.
D) an inside shift of the budget curve.

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Suppose you are choosing between milk and cookies. If the opportunity cost of cookies in terms of milk increases, then the budget curve will


A) shift inward.
B) rotate inward.
C) shift outward.
D) rotate outward.

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The marginal rate of substitution is the


A) absolute value of the indifference curve.
B) tradeoff rate between the two goods under consideration at any particular point.
C) total utility derived at any point.
D) rate at which the consumer increases utility.

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The "composite good" refers to


A) large purchases that cannot be incrementally divided.
B) an abstraction requiring more than a three dimensional graph.
C) income not spent on good X in a two-dimensional graphical presentation.
D) the notion that consumer pleasure cannot be modeled graphically.

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Say a consumer always consumed peanut butter and jelly in fixed proportions (for a perfect peanut and jelly sandwich) . Then the indifference curves for peanut butter and jelly for this consumer would be


A) L-shaped.
B) a straight line with positive slope.
C) a straight line with negative slope.
D) convex.

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If the consumer is willing to give up 3 units of food (vertical axis) in exchange for one unit of shelter (horizontal axis) and food is priced at 10 and shelter at 20, then the consumer is purchasing


A) too much food for utility maximization.
B) too much shelter for utility maximization.
C) just the right amount of each good for utility maximization.
D) less than the budget would allow.

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Excluding corner solutions, in consumer equilibrium, which of the following is true?


A) The marginal rate of substitution equals the slope of the budget constraint.
B) The indifference curve is steeper than the budget constraint.
C) The consumer is minimizing utility given the constraints.
D) The consumer can improve his/her situation by consuming more of both goods.

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