gotif89275 gotif89275 Today at 11:47 PM Mathematics Answered Let f(x) = -3x³ + 9x² - 5x + 15. Use the Factor Theorem to help answer the following questions. a) Is a O Yes O No b) Is x + 1 a factor of f(x)? O Yes No 1 a factor of f(x)? c) Is a 3 a factor of f(x)? O Yes O No