creshayla223 creshayla223 30-11-2020 Mathematics contestada Consider the function f(x) = 9X. Which statement MUST be true? Α) f(4), f(8) f(1) f(5) B) f(4)-f(1) = f(8) f(5) C) f(4) - f(1) = f(8) - f(5) ng 20 cols D) f(4) - f(1) = f(-4) - f(-1)