Question

Find the inverse of function f. f(x) = 1/2x +7 / id="TexFormula1" title="f(x)=\frac{1}{2}x + 7" alt="f(x)=\frac{1}{2}x + 7" align="absmiddle" class="latex-formula">
A.) f^-1 (x) = x -7 / $f^{-1}\:\left(x\right)\:=\:x\:-7\:\:$
B.) f^-1 (x) = 2x - 7 / $\:f^{-1\:}\left(x\right)\:=\:2x\:-\:7$
C.) f^-1 (x) = 2x- 14 / $\:f^{-1\:}\left(x\right)\:=2x-\:14$
D.) f^-1 (x) = 2x + 1/7 / $f^{-1\:}\left(x\right)=2x\:+\:\frac{1}{7}\:$

Answer 1

The answer is C.) f^-1 (x) = 2x- 14 /  $\:f^{-1\:}\left(x\right)=2x\:-\:14$