how do i answer these question? Also how do I know when the limit is equal to infinity or negative infinity please help me

o J - 6 -P C - X 56. Multiple Choice On which of the following intervals is f (x ) = not continuous? x (A) (0, 00) (B) [0, 00 ) (C) (0, 2) (D) (1, 2) (E) [1, 00) 57. Multiple Choice Which of the following points is not a point of discontinuity of f (x) = Vx - 1? (A) x = -1 (B) x=-1/2 (C) x = 0 (D) x = 1/2 (E) x =1 58. Multiple Choice Which of the following statements about the function la Chairs 2x, 0