In Problems 49-60, the function f is one-to-one. Find its inverse and check your answer. Graph f. f, and y = x on the same coordinate axes. 49. f(x) = 3x 50. f(x) = -4x 51. f(x) = 4x + 2 52. f(x) = 1 – 3x 53. f(x) = x³ – 1 54. f(x) = x³ + 1 55. f(x) = x² + 4 x20 56. f(x) = x² + 9 x0 4 57. f(x) 58. f(x) = -2 1 59. f(x) 60. f(x) x - 2 * + 2

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