Question

The equation h=-16t^2 + 32t +9 gives the height of a ball, h, in feet above the ground, at t seconds after the ball is thrown upward. How many seconds after the ball is thrown will it reach maximum height? What is its maximum height?

Answer 1

the vertex of any parabola is given by (-b/(2a))
the value of this is how many seconds
plug this value into the equation to get the max height

Answer 2

25?

Answer 3

yes
h=25
t=1

Answer 4

cool thanks:)

Answer 5

I figured out i wanted to check cause it is important thank you very much