be an aggregate of commodities other than local phone use and let Good 2 be local phone use. (Measure Good 1on the horizontal axis and Good 2 on the vertical axis.) On Monday,Toby didn't use the telephone at all. From this we can conclude that the slopemof his indifference curveat the consumption bundle he chose on Mondaywas:\
所选答案：
答案D greater than or equal to 0. 正确答案： 答案C 0.
27. \of bananas. If he consumes fewer than 18 bananas per week, he thinks that one banana is a perfect substitute for one apple. But you would have to pay him one apple for each banana beyond 18 that he consumes. The indifference curve that passes through the consumption bundle with 27 apples and 30 bananas also passes through the bundle with A apples and 13 bananas, where A equals:\
所选答案： 答案B 20 正确答案： 答案B 20
28.\indifference curves are circles, all of which are centered at(12,19).Of any two indifference circles, he would rather be on the inner one than the outer one. Which of the following is true?\答案
所选答案：
答案E More than one of the above statements are true. 正确答案：
\答案D Yoram prefers (8,17) to (18,28).\
29. A consumer who is unable to detect small differences in the amount of water in her beer could have a transitive strict preference relation but is unlikely to have a transitive indifference relation.
所选答案： 对 正确答案： 对
30. A person with reflexive preferences is someone who does not shop carefully.
答案
所选答案： 错 正确答案： 错
31.Fanny consumes goods x and y. Her indifference curves are described by the formula y=k/(x+7). Higher values of k correspond to better indifference curves. Which of the following is true? 所选答案：
\答案B Fanny prefers bundle (8,9) to bundle (9,8).\ 正确答案：
\答案B Fanny prefers bundle (8,9) to bundle (9,8).\
32. Heidi consumes goods x and y. Her indifference curves are described by the formula y=k/(x+6). Higher values of k correspond to better indifference curves. Which of the following is true? 所选答案：
\答案B Heidi prefers bundle (10,15) to bundle (15,10).\ 正确答案：
\答案B Heidi prefers bundle (10,15) to bundle (15,10).\
33.I prefer 6 apples and 1 orange to 5 apples and 2 oranges. From this we can conclude that: 所选答案：
答案E none of the above. 正确答案：
答案E none of the above.
34. If two goods are perfect complements:
所选答案：
答案D None of the above. 正确答案：
答案D None of the above.
35. Josephine buys 3 quarts of milk and 2 pounds of butter when milk sells for $2 a quart and butter sells for $1 a pound. Wilma buys 2 quarts of milk and 3 pounds of butter at the same prices. Josephine's marginal rate of substitution between milk and butter is greater than Wilma's. 所选答案： 错 正确答案： 错
36. Nancy's psychology teacher will give her a course grade that is the maximum of her scores on three midterm examinations. Nancy has convex preferences over the possible combinations of midterm scores.
所选答案： 错 正确答案： 错
37. Preferences are said to be monotonic if: 所选答案：
答案C more is always preferred to less. 正确答案：
答案C more is always preferred to less.
38.The marginal rate of substitution measures the distance between one indifference curve and the next one.
所选答案： 错 正确答案： 错
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