For the Pair of Functions, Determine the Domain of F $$f ( x ) = \frac { 2 x } { x - 1 } , g ( x ) = \frac { 4 } { x + 9 }$$

question 79

Multiple Choice

For the pair of functions, determine the domain of f + g.
- $$f ( x ) = \frac { 2 x } { x - 1 } , g ( x ) = \frac { 4 } { x + 9 }$$

• A) \(( \infty , \infty )\)
• B) \(( \infty , - 9 )\) or \(( 1 , \infty )\)
• C) \(( \infty , - 1 )\) or \(( - 1,9 )\) or \(( 9 , \infty )\)
• D) \(( - \infty , - 9 )\) or \(( - 9,1 )\) or \(( 1 , \infty )\)

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