If , which of these values of is NOT in the domain of this equation?
$y = x^2 + \frac{7}{x}$
-1
2
$- \sqrt{7}$
$\frac{1}{2}$
-2
Evaluate $\small f(g(3))$ if f(x)=6x-4 and $g(x)=x^2$.
Undefined
-6
196
-30
50
