What is the movement of air caused by different air pressures?

During the cold war, which of the following groups of countries would have all been"behind the iron curtain"

Deu 6. the federal reserve system to regulate (1) the annual federal budget (2) state sales tax rates (3) social security payments (4) the nation's money supply . .the codoral reserve system

If f(x) = 3x + 2 and g(x) = 2x - 2. what is (f - g)(x)?