If the Function Is One-To-One, Find Its Inverse $$f ( x ) = \sqrt { x - 7 } , x \geq 7$$

question 458

Multiple Choice

If the function is one-to-one, find its inverse. If not, write "not one-to-one."
- $$f ( x ) = \sqrt { x - 7 } , x \geq 7$$

• A) \(f ^ { - 1 } ( x ) = ( x - 7 ) ^ { 2 }\)
• B) not a one-to-one
• C) \(\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \mathrm { x } ^ { 2 } + 7 , \mathrm { x } \geq 0\)
• D) \(f ^ { - 1 } ( x ) = \sqrt { x + 7 }\)

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