First two are good SW...but do you think 96 seconds sounds like an appropo amount of time before she hits the water ??
When D hits the water her height = 0
0 = - 16t^2 + 16t + 96 use Quadratic formula or factoring to find the POSITIVE value of 't
a = -16 b = 16 c = 96
\(t = {-b \pm \sqrt{b^2-4ac} \over 2a}\)
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