Question 11 (1 point) T5. Let f(x) = x -4x - 12 x- - &x + 12 . Determine the equation(s) of the vertical asymptote(s) of f(x). x=2 and x=6 O X=-2 O X= 6 O X=2 Question 12 (1 point) T2. If /(x) is decreasing for every x > 5, then which choice is not a possibility for f (x)? Of'(x) =-x2 + 10x - 25 Of' ( x) =x-5 Of' ( x) =-5 Of ( x) =5-x