answer and explain the following questions

50. Let f(x) = - Find x - 3 (A) lim f(x) (B) lim f(x) X-3 (C) lim f(x) (D) 4' 52. Let f(x) = x+ 3 Find x2 + 3x (A) lim f(x) x-+-3 (B) lim f(x) (C) lim f(x) x-+3 53. Let f(x) = * - x - 6 - Find x +2 (A) lim f(x) (B) lim f(x) *-2 (C) lim f(x) 54. Let f(x) = x + x - 6 -. Find x + 3 (A) lim f(x) (B) lim f(x) x -3 (C) lim f(x) x-+2 55. Let f(x) = (x + 2) 2 x2 - 4 . Find (A) lim f(x) (B) lim f(x) X-2 0 (C) lim f(x) 56. Let f(x) x - 1 (x + 1 ) Find (A) lim f(x) (B) lim f(x) x - (C) lim f(x) 57. Let f(x) = 2x - 3x - 2 Find x2 + x - 6 (A) lim f(x) x-+2 (B) lim f(x) X-0 (C) lim f(x)