Donald likes fishing (X1) and hanging out in his hammock (X2). His utility function for these two activities is u(x1, x2) = 3X12X24. (A) Calculate MU1, the marginal utility of fishing. (B) Calculate MU2, the marginal utility of hanging out in his hammock. (C) Calculate MRS, the rate at which he is willing to substitute hanging out in his hammock for fishing.

PROBLEM (4) You have the Cobb-Douglas utility function u(x, y) = xy over apples (x) and plums (y) and you have $120 budget to spend and can carry at most 480 ounces in weight in your backpack going back to the dorm. Each apple costs $1 and weighs 8 ounces, and each plum costs $3 and weighs 4 ounces. You can only leave the store with a bundle of fruits you can afford and carry. (a) Drawing the relevant lines, intercepts, marking the points and hence identifying the feasible set of bundles, calculate the optimal bundle. (b) Forget about (a). If you were to choose a backpack before going on this shopping trip, for the weight constraint not to be an issue for you, how many ounces of weight capacity would you need for your backpack? HINT: That is, for this weight capacity of the backpack, you'd be able to carry the best bundle you can afford, i.e, the weight constraint is not binding for your decision. (c) Forget about (b). In (a), just before going out for shopping with your backpack to…

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There are two goods, apples and bananas. The price of apples is PA = $2,and the price of bananas is PB = $3. A consumer has $120 to spend, and his utility function is U(A,B)=2A2B3 a) With apples on the x axis, the slope of the budget line is ________ b) At A=2, B=1, the marginal utility of A is  and the marginal utility of B is ________ c) At the optimal bundle, the consumer buys  apples and  bananas ______