8. Suppose that MU_x = 10 and MU_y = 20. Further suppose that the consumer’s budget constraint can be expressed as 20x + 10y = 400. For this consumer, the optimal amount of good x to buy would be
(A)5.
(B) 0.
(C) 20.
(D)40.

1. If the intersection of the IS and LM schedules lies above the BP curve, then (A)there is a balance of payments surplus. (B) there is a balance of payments deficit. (C) the three curves are in equilibrium. (D)net foreign investment is decreasing.

2. If the BP curve sits above the intersection of IS and LM, then (A)the real interest rate and the real income levels are too high resulting in a balance of payments surplus. (B) the nominal interest rate and the real income levels are inconsistent with a balance of payments equilibrium. (C) real money demand is not equal to real income balances. (D)real income balances are greater than real trade balances.

3. If the price level decreases (A)the LM curve will shift to the right. (B) the LM curve will shift to the left. (C) the IS curve will shift to the right. (D)the IS curve will shift to the left.

4. In the figure above, point B represents (A)a current account surplus. (B) a reduction in inventories. (C) a current account deficit. (D)a temporary imbalance in the money markets.

5. The difference between panel A and panel B above is the (A)degree of capital mobility. (B) the choice of policy used. (C) exchange rate regime. (D)degree of price stability.

6. Suppose the price of A is $20, the price of B is $10, and that the consumer is currently spending all available income. At the consumer’s current consumption basket the marginal utility of A is 8 and the marginal utility of B is 2. (A)The consumer is currently maximizing utility. (B) The consumer could increase utility by consuming more of good A and less of good B . (C) The consumer could increase utility by consuming more of good B and less of good A . (D)Nothing can be said about the consumer’s utility because we do not know the consumer’s income or utility function.

7. Suppose that U(x,y) = min(3x,y). Further suppose that Px = $5 per unit and Py = $10 per unit and income is I = $105. For this consumer, the optimal basket to buy would be (A)(x,y) = (9,3) (B) (x,y) = (3,1) (C) (x,y) = (1,3) (D)(x,y) = (3,9)

9. Suppose the consumer’s utility function is given by U(x,y) = xy + y. The equation for this consumer’s demand curve for y when I ＜ Px is (A)y d = 0 (B) (C) (D)y d = 1/2

10. Consider a production function of the form Q = K2 L2 . What is the marginal rate of technical substitution of labor for capital at the point where K = 5 and L = 125? (A)5 (B) 25 (C) 50 (D)0.04

11. In a simultaneous move game with two players, (A)if neither player has a dominant strategy, we successively eliminate each player’s subordinate strategy. (B) a player chooses among two or more pure strategies according to pre-specified probabilities. (C) if one player has a dominant strategy and the other doesn’t, you can’t reach a Nash equilibrium. (D)if both players have a dominant strategy, these constitute their Nash equilibrium strategies.

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