Show all steps in proper mathematical form for full marks. Express all answers in exact form unless otherwise specified. Two communication marks will be awarded for proper form used throughout this evaluation. 1. Solve using an interval table: 5 2 [A5] x+4 x+1 Page 1 of 32. Given f(x) = x+2 x3 - 2x2 - 4x+8 a) Sketch. If the equation can be simplified, you must do so. Be sure algebraically determine and show on the sketch all x-intercept(s), y-intercept(s), vertices (if we have learnt how to determine this), hole(s) and asymptote(s). [A5] b) When is the function increasing? [Al] c) Determine the positive interval(s). [Al] d) What is the domain? [Al]