Solve the Problem $$f ( x ) = \sqrt { x } - 3$$

Multiple Choice

Solve the problem.
- $$f ( x ) = \sqrt { x } - 3$$

A) $f ^ { - 1 } ( x ) = - ( x + 3 ) ^ { 2 } , x \geq - 3$
B) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \mathrm { x } + 3 , \mathrm { x } \geq - 3$
C) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = ( \mathrm { x } + 3 ) ^ { 2 } , \mathrm { x } \geq - 3$
D) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = ( \mathrm { x } - 3 ) ^ { 2 } , \mathrm { x } \geq - 3$