3?. If the graph of f '(x) has an xintercept at x = c. which of the following must be true? {5 points} 0 The graph off has a relative minimum or relative maximum at x = c. O The graph of f has an inection point at x = c. O The graph off has an x-interoept at x = c. 0 None of the above is necessarily tme. 38. If the graph of f ' {it} Is continuous and has a relative maximum at x = c, which of the following must be true? (5 points} 0 The graph off has an xvinteroept at x = c O The graph off has an inection point at x = c. O The graph off has a relative minimum at x = c 0 None of the above is necessarily tme. 39. If the graph of f '(x) is continuous and decreasing with an x-interoept at x = c. which of the following must be true? {5 points) 0 The graph off has a relative maximum at x = c. O The graph off has an inection point at x = c. O The graph off has a relative minimum at x = c. 0 None of the above is necessarily tme. 40. Which of the following shows that f(x) grows faster than g(x)? (5 points) O lim f(x) = 1000 g(x) O lim f(X) = 0