Find the Domain $$f ( x ) = x ^ { 2 } + 7$$

Multiple Choice

Find the domain.
- $$f ( x ) = x ^ { 2 } + 7$$

A) $\{ x \mid x$ is a real number and $x \neq \sqrt { 7 } \}$
B) $\{ x \mid x$ is a real number and $x \neq - 7 \}$
C) $\{ x \mid x$ is a real number and $x \neq 7 \}$
D) All real numbers