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Quadratic word problems (vertex form)

Amir stands on a balcony and throws a ball to his dog, who is at ground level.
The ball's height (in meters above the ground), xx seconds after Amir threw it, is modeled by:
h(x)=−(x−2)2+16h(x)=-(x-2)^2+16
What is the height of the ball at the time it is thrown?
  • Your answer should be
  • an integer, like 66
  • a simplified proper fraction, like 3/53/5
  • a simplified improper fraction, like 7/47/4
  • a mixed number, like 1 3/41\ 3/4
  • an exact decimal, like 0.750.75
  • a multiple of pi, like 12 pi12\ \text{pi} or 2/3 pi2/3\ \text{pi}
meters