=-x'+18x* -117x3+320x- -300x a) (5 marks) Rewrite this equation in factored form, Show all of your work. b) (2 marks) Use this information to sketch a graph, by hand, of this section of Mathews' small intestine. c) (1 mark) Determine the domain of this function. d) (2 marks) Bacterial culture samples were taken at two unique points along the journey. Clearly mark these points on your graph. . At the only root with order two e) State the intervals that the vertical height is positive.[2]