T-Mobile LTE 6:41 PM c 4 >B 49% CJ 8 mathxl.com Find f'(x) for the following function. Then find f'(9), f'(0), and f'( - 1). f(x) = - 5x2 +12x f' = D Select the correct choice below and fill in the answer box within your choice, if needed. 0 A- f'(9)= E] (Simplify your answer, if needed) O B. The answer is not a real number. 0 C. The answer is undefined. Select the correct choice below and fill in the answer box within your choice, if needed. A- f'(O)= D (Simplify your answer.) B. The answer is not a real number. O C. The answer is undefined. Select the correct choice below and fill in the answer box within your choice, if needed. 0 A- f'(-1)=D (Simplify your answer.) 0 B. The answer is not a real number. O C. The answer is undefined