The trajectory of a basketball shot can be modeled by the eq

The trajectory of a basketball shot can be modeled by the equation h = - 0.09d ^2+ 0.9d+ 2 ,
where h is the height of the basketball in metres, and d is the horizontal distance of the ball from the
shooter in metres.
a) What is the maximum height reached by the ball ?
b) What is the horizontal distance of the ball from the shooter when it reaches its maximum height ‘?
c) How far from the floor is the ball when the player releases it ? .