A softball is hit off a bat and follows a pth described by the equation h(t)=-4.912+20t+1.5 where h is the height of the ball above the ground in metres and t is the time in the air in seconds. For how long is the ball grater than 15m in the above the ground? Select one: a. 0.853s O b. 2.375s O c. 3.228s O d. 4.155s

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