Below is the graph of a polynomial functionfwith real ooefficients. Use the graph to answer the Following questions about]: All local extrema offare shown in the graph. (a) The function f is decreasing over which intervals? Choose all that apply. C1 (-00 , -9) Ci (-9, -6) Ci (-5, -2) Ci (3, 7) Ci (-2, 7) Ci (7, no) (b) The function f has local minima at which x-values? If there is more than one value, separate them with commas. (c) What is the sign of the leading coefcient of f? Select One (d) Which of the following is a possibility for the degree of f? Choose all that apply. C14 C15 C15 C17 C18 Fig