Consider the parabola given by the equation:
f(x)=4x240x9\displaystyle {f{{\left({x}\right)}}}={4}{x}^{{2}}-{40}{x}-{9}


Find the following for this parabola:

A) The vertex is at the point (,)

B) The domain (in interval notation) of f(x)\displaystyle {f{{\left({x}\right)}}} is

C) The range (in interval notation) of f(x)\displaystyle {f{{\left({x}\right)}}} is