SOLUTION: Select the x-coordinate of the vertex of the parabola defined by the function f(x) = -3x^2 + 5x + 5. 1. - 3/5 2. 5 3. 5/6 4. -5/3 My answer is 5/6. Am I correct?

SOLUTION: Select the x-coordinate of the vertex of the parabola defined by the function f(x) = -3x^2 + 5x + 5. 1. - 3/5 2. 5 3. 5/6 4. -5/3 My answer is 5/6. Am I correct?

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Question 877711: Select the x-coordinate of the vertex of the parabola defined by the function
f(x) = -3x^2 + 5x + 5.
1. - 3/5
2. 5
3. 5/6
4. -5/3
My answer is 5/6. Am I correct?
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
correct.
equation is -3x^2 + 5x + 5
a = -3
b = 5
c = 5
vertex is at x = -b/2a which is equal to -5/-6 which is equal to 5/6.

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