Question: If f(x) = -2x 2 + 8x - 4, which of the following is true? A. The maximum value of f(x) is -4. B. The

If f(x) = -2x2+ 8x - 4, which of the following is true?

A. The maximum value of f(x) is -4. B. The graph of f opens upward.
C. The graph of f has no x-intercept

D. f is not a one to one function.

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