Question

Find f^-1(x) and it’s domain.

Answer 1

Answer: A

Explanation:

Letting
`f(y)=x`,

`x=√(y)-5\\\\x+5=√(y)\\\\y=(x+5)^(2)`

Also, the domain of an inverse is the same as the range of the original function, so the range is
`x \geq 0`