Drdraw the graph for the function:y=3.5+4x-4x^2 for the values of x from x=-3 to x=+3. from the graph find: a. the maximum value of the function y = 3.5+4x-4x^2 b. the range of values of x for which 3.5+4x-4x^2>0 (c.) the roots of the equation 3.5+4x-4x^2=0