Question

How do you find the domain and range of `f(x)=sqrt(x+4)`?

Answer 1

The domain would be anything that keeps the argument `(x+4)` non-negative. The result `f(x)` is also non-negative.

Explanation:

Domain :
`x+4>=0->x>=-4`

Range :
`f(x)>=0` as the argument may be `=0` when `x=-4`
graph{sqrt(x+4) [-10, 10, -5, 5]}