Answer:
no jack is
Step-by-step explanation:
yeet
-13-8a-4a=-3+13
-8a-4a=10
-12a=10
10/-12=a
a= -0.83
The maximum is achieved at vertex of parabola.
The x- coordinate of the vertex is determined by x = - b/(2a).
The maximum height is the corresponding y- coordinate
