What are the domain and range of the function f of x is equal to square root of x minus 7 end root plus 9 ?
A
domain: x is greater than or equal to 9 range: y is greater than or equal to 7B
domain: x is greater than or equal to 7 range: y is greater than or equal to 9C
domain: x is greater than or equal to negative 7 range: y is greater than or equal to 9D
domain: x is greater than or equal to 7 range: y is greater than or equal to negative 9