Please help and teach very step!
Do you need a ti-nspire to figure out this question: What is the max height of the ball and how many seconds does it take for it to reach max height? When, h(in feet) is the height above ground and t is seconds after it was thrown. Equation: h = -16t^2 + 32t + 9

Question

Please help and teach very step!
Do you need a ti-nspire to figure out this question: What is the max height of the ball and how many seconds does it take for it to reach max height? When, h(in feet) is the height above ground and t is seconds after it was thrown. Equation: h = -16t^2 + 32t + 9

nicole143 · Answer

@b87lar  Can you help me?

b87lar · Answer

Since we are looking at a parabola I would use the formula for figuring out its vertex: $$t_{vertex}=-\frac{b}{2a}$$ which will give you the time it takes to reach the maximum height.

b87lar · Answer

You can then calculate the actual height by plugging in the value of vertex t.

nicole143 · Answer

Can the ti not be used?

nicole143 · Answer

Can you show me with an example using different numbers and then walk through the one shown after?

nicole143 · Answer

@MathHelperTheGreat  Can you help me?