If f(x)=2x−3f(x) = 2x-3f(x)=2x−3, solve f−1(x)=f(x)f^{-1}(x) = f(x)f−1(x)=f(x).
x=1x=1x=1
x=2x=2x=2
x=3x=3x=3
x=4x=4x=4