A One-To-One Function Is Given $$m ( x ) = 7 x ^ { 3 } + 2$$

Multiple Choice

A one-to-one function is given. Write an expression for the inverse function.
- $$m ( x ) = 7 x ^ { 3 } + 2$$

A) $m ^ { - 1 } ( x ) = \frac { x - 2 } { 7 }$
B) $m ^ { - 1 } ( x ) = \frac { x + 2 } { 7 }$
C) $m ^ { - 1 } ( x ) = \left( \frac { x + 2 } { 7 } \right) ^ { 3 }$
D) $m ^ { - 1 } ( x ) = \sqrt [ 3 ] { \frac { x - 2 } { 7 } }$