Choose the One Alternative That Best Completes the Statement or Answers

question 494

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Find the domain of the composite function f ° g.
- $$f ( x ) = \frac { x } { x + 7 } ; \quad g ( x ) = \frac { 7 } { x + 5 }$$

• A) \(\{ x \mid x \neq - 5 , x \neq - 6 \}\)
• B) \(\{ x \mid x \neq 0 , x \neq - 5 , x \neq - 6 \}\)
• C) \(\{ x \mid x\) is any real number \(\}\)
• D) \(\{ x \mid x \neq - 5 , x \neq - 7 \}\)

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