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- Bob has a utility function U(x, y) = √x1 + 0.8√x2 + 0.64√x3 over his incomes x1, x2, x3 in the next three years. This function is an example of (A) expected utility; (B) quasi-hyperbolic utility function; (C) discounted utility; (D) none of the above. . Which of the following preferences agree with Bob’s utility? (A) (9, 10, 11) ≻ (9, 10, 12); (B) (9, 10, 11) ≻ (11, 10, 9);(C) (9, 10, 11) ≻ (9, 11, 10); (D) none of the above. Bob’s utility function implies (A) time stationarity; (B) transitivity; (C) impatience; (D) all of the above.Let u(x) be a utility function that represents % and let f(.) be a continuousmonotonic function. f(x) is monotonic when x > y ⇐⇒ f(x) > f(y) a) Show that any monotonic transformation of the utility function (f ◦u) can also represent the same preferences.Why the following variables (x1, x2 and x3) cannot be the Marshallian demandfunctions of a consumer with well–behaved preferences, even when pa ≥ pc.x1(p,y)= y/2pax2(p,y)= (pc y)/2pa pbx3(p,y)= (pa-pc)y/2pa pcHINT: Use properties of the Marshallian demand function to check this.
- The preferences of a typical Californian can be represented by the following utility function: U (x1 , x2 ) = α ln(x1) + (1 − α) ln(x2) Here, x1 and x2 are the quantities of electricity and gasoline, respectively. The consumer faces prices given by p1 and p2 and has income m. Currently, the government has decided to impose a consumption restriction so that any person in the state is allowed to consume at most 50 units of electricity (x1 ≤ 50). Call this restriction a rationing constraint. (a) If α=0.25, m=100,and p1 =p2 =1, find the optimal consumption bundle of gasoline and electricity. Is the electricity rationing constraint binding (meaning does x1∗ = 50)? (b) Suppose that α = 0.75, but the other parameters are the same. What is the optimal consumption bundle? Is the rationing constraint on electricity consumption binding? (c) Now, assume that there is no rationing constraint. Assume m = 100 and p1 = p2 = 1, but α remains as a generic parameter. Solve for the optimal quantity…Let x be the number of pizza slices and y the number of Cokes. If John’s utility function is u = min{7x, 4x+ 12y}, then if the price of pizza slices is 20 euros and the price of Coke is 40 euros, John will demand ? a- 2 times as pizza slices as Cokes b- 3 times as pizza slices as Cokes c- 6 times as pizza slices as Cokes d- 4 times as pizza slices as Cokes e- 5 times as pizza slices as Cokes f- only CokesA consumer has a perfect complements utility function, where she prefers to have one unit of H with each unit of G. Also, she has an income of $210. Assume that the price of H is $8 and the price of G is $6. What is the consumer's optimal choice for good G*? Group of answer choices 11 12 15 16
- 33. Suppose MRSx,y = MUx/MUy = 0.1(a) If the consumer substitutes 10 units of X for one unit of Y, then the utility remainsunchanged(b) Regardless of prices, the consumer will only consume Y(c) If the consumer substitutes 1 unit of Y for 0.1 unit of X, then the utility remainsunchanged(d) Regardless of prices, the consumer will only consume XAssume that the prices of good X, Y and Z are as follows R5,R1 and R4 respectively, and the Judith has an income of R37 to spend. HOW much of each good will judith consume in order to maximise her utility? What will be her total utility and marginal utility of the last rand spent on each good? Show all the calculationsLea's utility function is U =0.7 ln( x ) + y where x denotes her consumption of good X and y denotes her consumption of good Y. Suppose the government imposes a per-unit tax on good X equal to 5 dollars. The price of good X charged by the sellers of good X is Px = 9 (and does not change due to the tax), the price of good Y is Py = 13 and Lea's income is M = 389. What is Lea's own-price substitution effect of the price increase due to the tax ?
- Mylie’s total utility from singing the same song over and over is 50 utils after one repetition, 90 utils after two repetitions, 70 utils after three repetitions, 20 utils after four repetitions, −50 utils after five repetitions, and −200 utils after six repetitions. Write down her marginal utility for each repetition. Once Mylie’s total utility begins to decrease, does each additional singing of the song hurt more than the previous one or less than the previous one?Miss Coco consumes cheese cake and curry puff. Her consumption yields the following total utility as shown in the given table. Miss Coco has RM52 to spend. Suppose that the prices of cheese cake and curry puff are RM8 and RM4, respectively. Quantity (units) Total Utility Cheese Cake Curry Puff 1 56 32 2 104 60 3 136 84 4 160 104 5 170 116 6 176 126 7 178 134 How many units of cheese cake and curry puff should Miss Coco buy to maximize her utility with the income of RM52?You have £20 per week to spend, and two possible uses for this money: telephoning friends back home, and drinking coffee. Each hour of phoning costs £2, and each cup of coffee costs £1. Your utility function is U(X,Y) = XY, where X is the hours of phoning you do, and Y the number of cups of coffee you drink. What are your optimal choices? What is the resulting utility level? You can use the standard result on the constrained maximization of such a function, but must state it clearly. Now suppose the price of telephone calls drops to £1 per hour. What are your optimal choices? What is the resulting utility level? How much income per week will enable you to achieve the same quantities at the new prices as the ones you chose before? What income will enable you to attain the same utility as you did before? Comment on your answer in the context of equivalent variation and compensating variation.
