The figure above shows Sally's budget line and one of her indifference curves. At point a, Sally's marginal rate of substitution is ________

Refer to Figure 3.4. A Nash equilibrium is achieved at which cell(s) in the payoff matrix?

A) only at (North, North) B) only at (South, South) C) at both (North, North) and at (South, South) D) There is no Nash equilibrium.

An increase in the real interest rate outside of the United States will cause the dollar to ________ relative to other currencies and ________ net exports and real GDP

A) appreciate; increase B) appreciate; reduce C) depreciate; increase D) depreciate; reduce