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Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

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

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.