Jonathan likes to consume pizzas and burgers. If both the goods have diminishing marginal utility, then Jonathan's indifference curve is likely to be _____

Other things the same, a decrease in the U.S. interest rate

a. induces firms to invest more. b. shifts money demand to the left. c. makes the U.S. dollar appreciate. d. increases the opportunity cost of holding dollars.

An increase in the price of oil should cause the short-run aggregate supply curve to:

A. shift to the right. B. shift to the left. C. become horizontal. D. become vertical.