13. An equation of a quadratic function when the value of h is zero. A. f(x) = 3x B. f(x) = 3x + 11 C. f(x) = 3(x - 4)2? D. f(x) = 3(x-4) +5 14. Which of the following is NOT part of the group? A. f(x) = x(6x + 7) C. f(x) = (x - 6)(x – 6) B. f(x) = (x + 7)(8x² + 9) D. f(x) = 10(x – 11)² + 12

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