Currently, how much of the U.S. national debt is owed to foreigners?

Along the IS curve, which of the following markets are in equilibrium?

A) the money and forex markets B) the goods and forex markets C) the goods and money markets D) the goods, money, and forex markets

The table above shows the production possibilities for an economy

Drawing a PPF with books on the vertical axis and bread on the horizontal axis, a movement from possibility B to possibility C to possibility D shows the opportunity cost of ________ moving down along the PPF. A) books decreasing B) bread decreasing C) bread increases D) books is constant E) books and bread are both increasing