Question

What are the domain and range of this function

Answer 1

`f(x)=√(x-7)+9\\\\\text{the domain:}\\x-7\geq0\to x\geq7\\\\\text{the range:}\\√(x-7)\geq0\ \text{therefore}\ √(x-7)+9\geq9\\\\y\geq9`


`Answer:\\domain:\ x\geq7\\range:\ y\geq9`