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Which function is a rational function? Of(x) = Vx+4 Of (x) = 242 Of(x) =x+5+6 D Question 2 A step function typically has: O A smooth exponential curve O A V-shaped graph O A continuous curve O A set of constant values with jumps between them D Question 3 Which function type has breaks or jumps in its graph? O Polynomial Function O Step Function O Radical Function O Rational Function