Suppose that the functions $h$ and $g$ are defined $as$ follows.

$h(x)=x+4$

$g(x)=(x+3)(x+5)$

$(a)$ Find $(\frac{h}{g})(1).$

$(b)$ Find all values that are NOT $in$ the domain $of\frac{k}{g}.$

$If$ there $is$ more than one value, separate them with commas.

$(a)(\frac{h}{g})(1)=$

$,...$

$(b)$ Value$(s)$ that are NOT $in$ the domain $of\frac{h}{g}$ :