Refer to Table 1-1. What is Lydia's marginal cost if she decides to stay open for an extra two hours instead of one hour?

Which of the following would cause the US dollar to increase in value compared to the Japanese yen?

(a) An increase in the money supply in the US (b) An increase in interest rates in the US (c) An increase in the US trade deficit with Japan (d) The US purchase of gold on the open market (e) The sale of $2 billion dollars worth of Japanese television sets to the US

Which of the following is FALSE about indifference curves?

A) They are downward sloping. B) They are convex to the origin. C) They intersect. D) They can shift.