Question 1198105
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(a)  The vertex of this parabola is d= 5.5,  h= 7.


(b)  The ball's initial height is the value produced by the formula at d= 0.

     Substitute d= 0 into the formula and find h = -0.2*(0-5.5)^2 + 7.

     Make the necessary calculations.


(c)  Plot the graph on your own.

     Plotting graphs is the students' job.



(d)  In this problem, the vertex represents the point, where the socces ball is in the highest position.
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Solved, answered and explained.