9. Which of the following correctly represents the solution to the inequality? $x^2 + 2x \ge x + 6$ 10 11 12 a. 16 17 18 4 -3 -2 -1 0 1 2 3 4 b. Correct 4 -3 -2 -1 0 1 2 3 4 c. 4 -3 -2 -1 0 1 2 3 4 d. 4 -3 -2 -1 0 1 2 3 4
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