What is the inverse function of f(x)=5x+2f(x) = 5^{x+2}f(x)=5x+2?
f−1(x)=log5(x)−2f^{-1}(x) = \log_5(x) - 2f−1(x)=log5(x)−2
f−1(x)=log5(x−2)f^{-1}(x) = \log_5(x-2)f−1(x)=log5(x−2)
f−1(x)=5x−2f^{-1}(x) = 5^{x-2}f−1(x)=5x−2
f−1(x)=15x+2f^{-1}(x) = \frac{1}{5^{x+2}}f−1(x)=5x+21