OpenStudy (anonymous):

PLEASE HELP!! 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 - 16t^2, 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 Greg's car moving in the air? a. 0 < t <(or equal to) 3 b. -3 < t <(or equal to) 3 c. t > 3 d. 0 < t < 3

4 years ago
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