What was the purpose of direct democracy in ancient greece?

Arguably one of the most important inventions of the 20th century was a) the transistor. b) air conditioning. c) the vacuum cleaner. d) radio broadcasting.

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

Which best compares the organization of the biography or maria anderson and maria anderson sings