The theory that there are no predictable trends in securities prices that can be used to "get rich quick" is the

A steep slope in a time series graph means the variable is

A) high. B) rising or falling slowly. C) very close to its trend point. D) rising or falling quickly. E) falling.

Everything else equal, an appreciation of the dollar will:

A) cause the net exports of the U.S. to increase. B) cause the U.S. GDP to fall. C) not affect U.S. GDP. D) cause the U.S. GDP to increase.