C) 16, Solve the problem. D) 21 u 16, 8) A coin is tossed upward from a balcony 380 ft high with an initial velocity of 16 8) interval of time will the coin be at a height of at least 60 ft? (h = -16t2 + + ho) D) Ostg5 9) If a rocket is propelled upward from ground level, its height in meters after t seconds is given by 9) h = 9.8t2 + 88.2t. During what interval of time will the rocket be higher than 137.2 m? 10) 10) If a rocket is propelled upward from ground level, its height in meters after t seconds is given by h = 9.8t2 + 1 1 7.6t. During what interval of time will the rocket be higher than 343 m? 1