need help with problems 11-21. Answers only is fine if you want. I'll give helpful rating.

11 Select the correct answer. Use Limit Laws to evaluate 31 - 3 lim 1-+3 (1 - 1)2 O A. N/ W W / N O B. OC. 2 OD. 112 Select the correct answer. Evaluate the limit: lim COs' X 3 sin x O A. O B. 0 O C. NIW N/ - OD.13 Select the correct answer. Where is the function f(x) discontinuous? f(X) = sinx + 3 cosx +1 x2 - 1 O A. x= 2 and x= -1 O B. x= 1 and x= -1 O C. x= 2 and x= -2 O D. x= 1 and x= -214 Select the correct answer. X2 + 2k if x $2 What value of k makes the function continuous at x = 2? f(X) = 13 x + K if x > 2 OA. 3 OB. 4 OC. 1 OD. 215 Select the correct answer. Which option describes the continuity of fix) at x= 3? x2+3x1 if2