Evaluate -x - y when x = -12 and y = 2

At diana's closet, 1/6 of the clothes are white and another 7/12 are black. what fraction of the clothes is either black or white?

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?