I. For each polynomial function, a) factor the polynomial if it is not in factored form, b) find the y-intercept, c) find all the x-intercepts and state each of their multiplicities, d) state, in interval notation, the intervals of x on which the function is positive, and e) state, in interval notation, the intervals of x on which the function is negative. 1. f(x) = (x +3)(x-2)(x+5) 2. g(x) = (2x - 1)(x -6)(3x + 7) 3. h(x) = (x - 1)?(x+ 2)'(4x +9) 4. f(x) = 3x*+9x- 30x2