5. during the eruption of mount st. helens in 1980. debris was ejected at a speed of over 440 feet per second
(300 miles per hour). the elevation in feet above sea level of a rock ejected at an angle of 75° above
horizontal is given by the function y(1) --1612 +425t+8200 where t is the time in seconds after the
iption. the rock's horizontal distance in feet from the point of ejection is given by x(i) = 1131. if the rock
landed at an elevation of 6000 feet, what is the horizontal distance from the point of ejection to where it!
landed rounded to the nearest hundred feet?