21. Simplify: (11 +0) + (3-150) A. 14-14 B. -4+4 C. 12 - 121 D. 14+16i 22. Simplify B. = - D. = 21. Simplify: (8 + 100)(5 -87) A. 40-141 +80 B. 120 - 141 C. 88 + 501 D.40-141-807 24. Given /(x) = 2x] + 16x + 18, find the value of k if the function is written in vertex form. Ak= -9 B.K=4 C.=-14 D.K =7 25. Which function is represented by the graph? A. f(x) = =(x-3)(x-6) B. /(x)= (x+ ])(r+6) C. (x) = (x-]](r-6) D. f(x) = 3(x- 3)(x-6)