A ball is thrown upward and outward from a height of 5 feet. The height of the ball, y, in feet, can be modeled by y=-0.4x^2+1.6x+5 where x is the​ ball's horizontal​ distance, in​ feet, from where it was thrown.
a. What is the maximum height of the ball and how far from where it was thrown does this​ occur?
b. How far does the ball travel horizontally before hitting the​ ground?
c. Graph the equation that models the​ ball's parabolic path.