Restrict the domain of the function f so that the function is one-to-one and has an inverse function. Then find the inverse function f-1. State the domains and ranges of f and f-1.
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f(x) = |x - 9| + 1
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A. f-1(x) =x+ 8The domain of f and the range of f-1 are all real numbers x such that x ? 9.The domain of f-1 and the range of f are all real numbers x such that x ? 1.
B. f-1(x) = x - 8The domain of f and the range of f-1 are all real numbers x such that x ? 9.The domain of f-1 and the range of f are all real numbers x such that x ? 1.
C. f-1(x) = -x - 8The domain of f and the range of f-1 are all real numbers x such that x ? 1.The domain of f-1 and the range of f are all real numbers x such that x ? -9.
D. f-1(x) = x + 8The domain of f and the range of f-1 are all real numbers x such that x ? -9.The domain of f-1 and the range of f are all real numbers x such that x ? 1.
E. f-1(x) = -x + 8The domain of f and the range of f-1 are all real numbers x such that x ? 1.The domain of f-1 and the range of f are all real numbers x such that x ? 9.
Answer: A
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