1 3 3 2 Analyze the polynomial function f(x)=x-7x-7x+21. Answer parts (a) through (h). The graph of f behaves like y = for large values of |x|. Sa (b) Find the x- and y-intercepts of the graph of the function. The x-intercept(s) is/are 7,3,-7 (Simplify your answer. Type an integer or a fraction. Use a comma to separate answers as needed. Type each answer only once.) The y-intercept(s) is/are 21 (Simplify your answer. Type an integer or a fraction. Use a comma to separate answers as needed. Type each answer only once.) (c) Determine the zeros of the function and their multiplicity. Use this information to determine whether the graph crosses or touches the x-axis at each x-intercept. The real zero(s) of f is/are -7,3,7 (Simplify your answer. Type an integer or a fraction. Use a comma to separate answers as needed. Type each answer only once.) The least zero is of multiplicity , so the graph of f so the graph of f the x-axis at x= the x-axis at x= The middle zero is of multiplicity The greatest zero is of multiplicity, so the graph of f the x-axis at x=