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Practice A: Attributes of Rational Functions Problem 9 Alex says that x = 5 is a vertical asymptote of the function f (x) =2 x2-x-20 x2-7x+10' but her teacher said that answer is incorrect. Correct Alex's mistake then explain what Alex may have been thinking to make her think that x = 5 was a vertical asymptote. Problem 10 Pablo says that x = -3 is defined in the domain of the function f (x) = 2 x+1 Is Pablo correct? Justify your response. Problems 11-22 Identify all horizontal and vertical asymptotes, holes, and x-intercepts of the function. State the domain of f (x). f ( x ) = X2 - 16 f ( x ) = - x - 9x + 18 4x - 8 x2 - 3x - 18 11. Factored 17. Factored Form Form 12. Horizontal 18. Horizontal Asymptote Asymptote 13. Vertical 19. Vertical Asymptotes Asymptotes 14. Holes 20. Holes 15. x-intercepts 21. x-intercepts 16. Domain 22. Domain