Joko is a university student, working part-time at copying service center for Rp. 8/hour with zero non-labor income. (a) Graph Joko’s budget constraint and label the utility-maximing outcome if Joko opts to work 40 hours per week. (b) Suppose Joko’s parents decide to send him Rp.100/week. Graph Joko’s new budget constraint. (c) How many hours will Joko now have to work to maintain the same weekly income as in (a)?

1. An individual derives utility from the consumption of a basket of goods, c and leisure time, given by U(c, l) =cºl(1-a) where 0 < a < 1, is a constant; and must decide how to allocate her time between work, L and leisure to maximize her utility. The individual has a total of 24 hrs in a day (L + l = 24) and total consumption is constrained by her income; i.e., c = wL, where w the real per hour, is taken as given. (a) Solve for the optimal labor supply.

4 Part Question on Caesar   * * PART 1 * * Caesar has preferences that are described by the utility function u = 3x 1 + 5x 2. Caesar strictly prefers the bundle (x 1, x 2) = (0, 6.6) to the bundle A. (3, 3) B. (5, 3.6)   C. (0, 8.4) D. (11, 1.8) E. (8, 3.60)     * * PART 2 * * What is the functional form of Caesar’s preferences, or indifference curves? A. Linear (perfect substitutes)                    B. Leontief (perfect complements) C. Satiation D. Concave, but not strictly concave          E. Cobb-Douglas     * * PART 3 * * Caesar’s preferences are A. strictly convex. B. definitely not well-behaved. C. definitely well-behaved. D. strictly concave. E. neutral.     * * PART 4 * * Caesar has been consuming the bundle (x 1, x 2) = (10, 2.4). At this point, what is the marginal rate of substitution? A. – 0.25 B. –0.6 C. – 1.67 D. – 3.0 E. – 5.0.

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(a) Suppose we have preferences U(X, Y) = min [X, 3Y]. Graph/sketch the indifference curve through the bundle (X = 30, Y = 30). What is the utility of (30, 30) and explain why the indifference curves look the way they do. (b) What does the Marginal Rate of Substitution tell us about preferences? < (c) Why is the Marginal Rate of Substitution not applicable in this example? < (d) What do we mean by a composite good? What does this composite good look like with these preferences? Show and explain.< (e) State the consumer's maximization problem and express this in words.< (f) Now let Px = 10, Px= 20 and income M = 2000. Find optimal X*, Y*, and the resulting Utility (U*). Show your work. < (g) Now let Py = 15. How does optimal consumption (X*.Y*) and utility (U*) change relative to (e)? Explain in simple terms and show in a diagram.<

Sonya's Personal Monthly Family Budget $350 Retirement $252- College $455 Taxes Savings Savings $906 Housing, Utilities, $200 Emergency Savings $662 Transportation $425 Clothing, Food, and Entertainment

A consumer has preferences over bundles of two goods with indifference curves defined by X2 = 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 = x + k for k € R cannot arise from monotone preferences.

Question 1 Consider a consumer with a utility function of U(X,,X2, ... , Xn) = II-1 X , a; > 0, i = 1,2,3, ...,n. P; is a price of 1 unit of the i-th good. Assuming that the consumer has the total budget of $M, derive his optimal consumption bundles in the following procedure. (a) Set up the consumer's utility maximization program with a Lagrangean multiplier. (b) What is an economic intuition of the Lagrangean multiplier? (c) Assuming an interior solution, get all the FOCS. (d) Find an optimal consumption bundle while specifying each step required to get the solution. (e) Characterize the maximized utility as a function of $M and the parameters. What does it look like? (f) Find an exact value of the Lagrangean multiplier.

Julius builds dining chairs that he sells for $200 a chair. His fixed costs are $1,000 (for workshop equipment). Each chair costs him $50 in materials to produce plus an extra $25 for each previous chair made that day, which reflects Julius's increasing exhaustion. (Thus, the first chair cost $50, the second costs $75, the third cost $100, etc.) Assume time requirements in producing a chair are not a factor. How many chairs should Julius produce each day?

10) Suppose that the utility function of an individual can be described as U(X,Y) = 4X +2Y. For this utility function the MRSA) is always X*YB) is always constantC) is always X/YD) is always X+YE) is always X-Y.