Question

What is the domain and range of `f(x)=sqrt(x-9)+4`?

Answer 1

Domain : `x >=9`.
Range : `f(x) >=4`

Explanation:

Domain (value of x) : `x-9>=0 or x >=9`. Since value under root can not be a negative number.

Range (value of f(x)) : `f(x)>=0+4 or f(x) >=4` [Ans]