Some economists argue that the recent relatively high rate of unemployment has resulted in part from the fact that a part of the workforce has not made the adjustment to new technologies

Which one of the following is NOT a component of aggregate demand?

A) investment expenditures B) government purchases C) consumption spending D) merchandise inventories

For this question, assume that the Phillips curve equation is represented by the following equation: ?t - ?t-1 = (m + z) - ?ut. Given this information, the natural rate of unemployment will be equal to

A) m + z. B) (m + z - ?). C) ?(m + z). D) 0. E) none of the above