The following graph shows the equation of a projectile that is launched from a platform that is it high. The equation for the path of the projectiles y = -x^2 + 3x + 5. Which of the following observations about the graph is true? Select all that apply.

A.
The vertex is (1.5, 7.25)

B.
The zeros are x = -1 and x = 4

C.
The axis of symmetry is x = 1.5.

D.
The Y-intercept is (5,0)

E.
The vertex form is Y = -(x – 1,5)^2 +4.