Find the Domain of the Square Root Function $$f ( x ) = \sqrt { 9 x - 36 }$$

Multiple Choice

Find the domain of the square root function. Then use the domain to choose the correct graph of the function.
- $$f ( x ) = \sqrt { 9 x - 36 }$$

A) domain of $f : ( * , 4 ]$

B) domain of $\mathrm { f } : [ - 4 , \infty )$

C) domain of $f : [ 4 , \infty )$

D) domain of $f : ( x , - 4 ]$