at what value of x does the minimum or maximum occur for the function below?
f(x)=-5(x+9)^2+8
The function is a quadratic function in the form f(x) = ax^2 + bx + c, where a = -5, b = 90, and c = 8. The minimum or maximum value occurs when x = -b / 2a.
Plugging in the values, we have x = -90 / (2*(-5)) = -90 / -10 = 9.
Therefore, the minimum or maximum value occurs at x = 9.