3. Let f be a function that is continu sus on the closed interval [1, 13]. Given that f (1) = 1 and f (13) = 5, which of the following statements is guaranteed by the Intermediate Value Theorem? A. f (x) is linear B. f (x) is always increasing C. f (x) = 3 has at least one solution in the open interval (1, 13) D. f (7) = 3 E. There is at least one maximum on the open interval (1, 13) 4. Let f be the function defined by f (x) = V/x+31 Which of the following statements is true? A. fis not continuous at x = - 3 B. fis not differentiable at x = - 3 C. fis continuous and differentiable at x = - 3 D. x = - 3 is a vertical asymptote of the graph of f E. lim, - -3 f(x) +0