a. Build polynomial and exponential functions with real solution(s) given a graph, a description of a relationship, or ordered pairs (include reading these from a table). *The polynomial function This is the graph of a polynomial function. 80 f(x) = x3 - 2x2 + kx + 30 has roots at -5, 1 and 6. What is the value of k? 40 20 -2 0 NJ Which could be the graphed function? A. f(x) = -1(x +2)2(x - 5) B. f(x) = (x +2)2(x- 5) C. f(x) = -1(x + 2)(x - 5)2 Zoom D. f(x) = (x + 2)(x- 5)2