1) Miss Mora has a utility function U(B, S) = B+(S+4) ; where B is Bakso and S is Soto. Meatball prices are $ 1 and Soto is $ 8. He has a $ 100 budget to spend on these food products. Look for: MUB, MUS, and MRS; prove it that MUB, MUS, and MRS are experiencing diminishing or not; find the values of B and S that can maximize their utility; the curve image. What happens if the price of Meatballs increases to $ 5? Calculate the budget constraint, optimal choice in periods 1 and 2, then show the income effect and its substitution and draw the curve, then what is your conclusion.

2) Given that the function U (x, y) = x + 2y. Income is 10 rupiah, the price of goods x (Px = 1 / unit). The price of goods y for period-1 (Py1 = 0, 20 / unit) and period-2 (Py2 = 0, 50 / unit). Asked: find the optimal choice by showing the income and substitution effects of the case, and the curve figure. What is your conclusion?