[16 Marks] (Long Answer Question) File Upload Required Find all values of a in the interval [0, 2x] that satisfy the equation 6 sectx - 20 sec x + 16 = 0[14 Marks] (Long Answer Question) File Upload Required 90 - x2 - 3 Consider the function f(x) = x2 - 8x - 9 a) Is x = -1 a vertical asymptote of f()? Show your work. b) Is x = 9 a vertical asymptote of f(x)? Show your work.:1: Consider the function x) : Q + Q + E ai Sketch the graph of t}. Ia} Is 3' onetoone? Explain. (:1 If f is onetoone, then find a formula for the inverse functiont f_1[$] d} Sketch the graph of f_1(1:) on the same set of axes you used in part a. ei What is the domain of f_1[1]? f] What is the range of f_1(:1:}