Mathematics

2 February, 07:17

When a baseball is hit by a batter, the height of the ball, h (t), at time t, t=0 is determined by the equation h (t) = - 16t^2+64t^2+4. If t is in seconds, for which interval of time is the height of the ball greater than or equal to 52 feet?

A: 1 B: t<=1

C: 0 D: 1<=t<=3

+4

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