4. Examine the tables of values for the following functions: X -1 3 4 5 f(x) 7 21 13 48 95 X -1 1 3 4 5 g (x) 13 25 25 7 a) One of these functions is quadratic. Use a graph to determine which. b) Find the zeros of the quadratic function in part a). c) Use the answer to part b) to determine the equation of the quadratic function in part a)