SOLUTION: f(x)=-2x^2+6x how many seconds will it take the ball to reach the maximum height

Question 1098986: f(x)=-2x^2+6x
how many seconds will it take the ball to reach the maximum height
Found 2 solutions by Fombitz, Boreal:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Convert to vertex form,

The max height occurs at the vertex at

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
-2x^2+6x=0
The vertex x-value is -b/2a. This is -6/-4 or 1.5 seconds, to the vertex, which is the maximum height.

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