Find the Inverse of the Given Function and Express It $y = f ^ { - 1 } ( x )$

Find the inverse of the given function and express it in the form $y = f ^ { - 1 } ( x )$ . Verify the result by showing that $\left( f \circ f ^ { - 1 } \right) ( x ) = \left( f ^ { - 1 } \circ f \right) ( x ) = I ( x )$ . $f ( x ) = \frac { 2 x + 10 } { 5 }$

A) $f ^ { - 1 } ( x ) = 5 x - 2$
B) $f ^ { - 1 } ( x ) = \frac { 5 } { 2 } x - 5$
C) $f ^ { - 1 } ( x ) = \frac { 2 } { 5 } x + 2$
D) $f ^ { - 1 } ( x ) = \frac { 5 } { 2 } x + 5$
E) $f ^ { - 1 } ( x ) = 2 x + 5$

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