A consumer has preferences over bundles of two goods with indifference curves defined by -¤2 = ½ for k > 0. (a) Find a utility function representing these preferences assuming that the consumer's pref- erences are monotone. (b) Give an example of a utility function representing non-monotone preferences with the same indifference curves. (c) Show that indifference curves of the form x₂ = x² + k for k € R cannot arise from monotone preferences.

Utility maximization under constraint, substitution and income effect, CV and EV Josh gets utility (satisfaction) from two goods, A and B, according to the utility function U(A, B) = 4[A-4 + B-4-4 + 40. While Josh would like to consume as much as possible he is limited by his income. a. Maximize Josh's utility subject to the budget constraint using the Lagrangean method b. Suppose PA increases. Show graphically the income, substitution effect and total effect and explain c. Suppose PA increases. Show the graphs for CV and EV and explain. One graph for CV and one graph for EV

What is the optimum solution for this utility functions? • U= min (1/2x, 1/2y) • U= 1/2 x +1/2 y • -U= In x + y Explain why non-convex IC has a corner solution instead of an interior solution?

A consumer’s preferences over pizza (x) and steak (y) are given by u(x,y) = x2y (HINT: MUx = 2xy and MUy = x2) and his income is I = $120 and py = $1. (a) Calculate his optimal bundle when pX = $8 (call this bundle A) and separately when pX = $1 (call this point C). (b) Finding the decomposition bundle B, calculate the income and substitution effects on the amount of pizza of a decrease in the price of pizza from pX = $8 down to pX = $1. (c) Forget about the decomposition bundle and the two effects. In (a), the price of pizza decreases, hence the agent ends up better off. Let’s quantify how much “better off” the agent becomes after this price drop, in dollars. For this, instead of the price drop, suppose the agent is given some money $m and he optimize utility with this additional gift included to his budget. What should m be, so that his optimal utility with his expanded budget is exactly equal to his utility at the bundle C (the bundle he chooses optimally when pizza price drops to…

A consumer has a (direct) utility function over x1 and x2: u(x₁, x2) = x₁x2.5 The price of good 1 is p1=1; the price of good 2 is p2=2; and the consumer has m=24 in income. Indicate which of the following statements is true. Select one: O Demand for good 1 is equal to 24. O Demand for good 2 is equal to 6. O Indirect utility function is equal to 32. O The consumer will demand 0 units of good 2. O None of the statements is correct.