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Question 15 (1 point) Determine the completely factored form of f(x) = x3 + 3x] - x - 3. Rx) = (x+ 3)(x - 1)(x+1) ( Rx) = (x+ 3)*(x- 1)(x+2) Of(x) = (x+3)? (x + 2)(x + 1) Of(x) = (x+ 1)(x - 15x2 + 6x) Question 16 (1 point) Determine the zeros of the function /(x) = 2x3 -x3 - 13x - 6. O 1, -2, 3 O-0.5, -2, 3 O 0.5, -2, 3 O 6, - 1, 2 Question 17 (1 point) Which is the solution to the inequality -5x+6> -2x+9? O -2 -1 0 1 2 : 3 -1 0 2 O -1 0 1 2 O -2 -1 0 2Question 18 (1 point) Determine the interval(s) on which x3 + 2x - 3 > 0- Ox1 Ox1 Question 19 (1 point) Provide the intervals you would check to determine when -5x + 37x > -15x2 + 12x+ 15. Ox = 3, x=-0.5 Ox 0.5 Ox 15 Ox = 1, x = 15 Question 20 (1 point) Solve the inequality 5x 7 O X