Find $f \circ g$ And the Domain of the Composite Function $f ( x ) = \frac { 1 } { x } , g ( x ) = x + 7$

Find $f \circ g$ and the domain of the composite function.​ $f ( x ) = \frac { 1 } { x } , g ( x ) = x + 7$ ​

A) $\frac { 1 } { x } + 7$ Domain of $f \circ g$ : all real numbers x except $x = 0$
B) $- \frac { 1 } { x + 7 }$ Domain of $f \circ g$ : all real numbers x except $x = - 7$
C) $\frac { 1 } { x + 7 }$ Domain of $f \circ g$ : all real numbers x except $x = - 7$
D) $\frac { 1 } { x } - 7$ Domain of $f \circ g$ : all real numbers x except $x = 0$
E) $\frac { 1 } { x - 7 }$ Domain of $f \circ g$ : all real numbers x except $x = 7$

Correct Answer:

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