(1 point) Consider the function f(x) x2 = 10x + 21 x - 7 Find the vertical asymptote(s). If there is more than one vertical asymptote give a list of the x- values separated by commas. If there is no vertical asymptote, type in None. x = If this function has a horizontal asymptote, give its y-value. If there is no horizontal asymptote, type in None . Find the x- intercept(s). If there is more than one x-intercept give a list of the x-values separated by commas. x = Find the y-intercept