The table below shows the heights of students in a group. students = st | hight = h st h a 54 b 48 c 52 d 56 e 55

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0