Find the Domain of the Rational Expression $f ( x ) = \frac { 3 x - 5 } { x ^ { 2 } - 49 }$

Find the domain of the rational expression.
- $f ( x ) = \frac { 3 x - 5 } { x ^ { 2 } - 49 }$

A) $\{ x \mid x$ is a real number and $x \neq 7 \}$
B) $\{ x \mid x$ is a real number and $x \neq 49 \}$
C) $\{ x \mid x$ is a real number and $x \neq 7 , x \neq - 7 \}$
D) $\left\{ x \mid x \right.$ is a real number and $\left. x \neq \frac { 5 } { 3 } \right\}$

Correct Answer:

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