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 height in feet of a rock ejected at angle of 75° is given by the equation y() --18°+4258+ S200.
where t is the time in seconds after the eruption. The rock's horizontal distance in feet from the point of ejection is
given by {l) - 113. Assuming the elevation of the surrounding countryside is 0 feet, what is the horizontal distance
from the point of ejection to the where the rock would have landed? Round your answer to the nearest foot.