Explain, using these theorems, why the function is continuous at every number in its domain.

g$($v$)=$

$7$v $1$v$2+2$v $63$

g$($v$)$ is a rational function, so it is continuous at every number in its domain.g$($v$)$ is an exponential function, so it is continuous at every number in its domain.$$g$($v$)$ is a trigonometric, so it is continuous at every number in its domain.g$($v$)$ is a polynomial, so it is continuous at every number in its domain.g$($v$)$ is not continuous at every number in its domain.

State the domain. $($Enter your answer using interval notation.$)$