Please help with the following questions

1. (a) Evaluate the limits where they exists; (i) lim 9 (3 marks] (ii) lim Vr(5-D) (3 marks) I-+5+ 1- r (ifi) lim (3 marks) (iv) lim 4 - 3VI [3 marks] I-+00 Vr +3 (b) Complete the following definition for continuity: 'A function f is continuous at a point a if ...' (3 marks) (c) Investigate the continuity of the following functions. If the function is not continuous determine if that point is a removable discontinuity. (i) f(x) = 12- 1 (3 marks) (ii) f(x) = - 5x - 6 [7 marks