If the Function Is One-To-One, Find Its Inverse $$f ( x ) = 2 x + 3$$

Multiple Choice

If the function is one-to-one, find its inverse. If not, write "not one-to-one."
- $$f ( x ) = 2 x + 3$$

A) not a one-to-one
B) $f ^ { - 1 } ( x ) = \frac { x } { 2 } - 3$
C) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { \mathrm { x } + 3 } { 2 }$
D) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { \mathrm { x } - 3 } { 2 }$