2. Use the graph of each function to write a possible polynomial equation for each. Leave your answer in factored form with powers to show the correct multiplicity of a root. Use the y- intercept to determine the value of the leading coefficient (a). a) Cubic b) Quartic X .X 3. Sketch each of the following polynomial functions without a calculator. Clearly label all zeros and the y-intercept. The graphs do not need to be drawn to scale. a) y = x(x - 3)(x + 4) b)y = -(x - 1)(x + 2)2(x - 3) Xc) y = x3 - 5x2 - 12x + 36 AY X d) y = x* + 3x3 - 14x2 - 12x + 40 * X\f