Which algebraic rule describes the 90° clockwise rotation about the origin? A) (x, y) = (-x, y)

B) (x, y) = (x,-y)

C) (x, y) - (y, -x)

D) (x, y) - (-y, x)

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?