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Height of a Projectile A projectile is launched from ground level with an initial velocity of feet per second. Neglecting air resistance, its height in feet t seconds after launch is given by In Exercise, find the time(s) that the projectile will (a) reach a height of 80 ft and (b) return to the ground for the given value of . Round answers to the nearest hundredth if necessary.
EXAMPLE SOLVING A PROBLEM INVOLVING THE HEIGHT OF A PROJECTILE
EXAMPLE ANALYZING SPORT UTILITY VEHICLE (SUV) SALES
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