greg is in a car at the top of a roller - coaster ride. the distance, d, of the car from the ground as the…

greg is in a car at the top of a roller - coaster ride. the distance, d, of the car from the ground as the car descends is determined by the equation d = 144 - 16t², where t is the number of seconds it takes the car to travel down to each point on the ride. for which interval of time is gregs car moving in the air? 0 < t ≤ 3 -3 < t ≤ 3 t > 3 0 < t < 3

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