Xy + w = 9 solve for y x(4 - k) = p solve for k i'm really stuck on

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

Math each whole number with a rational,exponential expression

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?