Algebra

1. Sydney is tossing a softball into the air with an underhand motion. The distance of the ball above her hand at any times given by the formula: h(t)=64t-16t^2.where h(t) is the height of the ball (in feet) and t is time (in seconds).
a. At what times,t, is the ball in her hands?
b. At what time, t is the ball at its maximum height?
c. How high h, is the ball at its maximum height?

asked by Keonn'a : Please help me.
  1. (a) find t when h=0 (just solve for t, as usual)

    as with all quadratics, the vertex is midway between the roots, at t = -b/2a = -64/-32 = 2

    posted by Steve

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