How do you find the inverse of #y=log(x+4)#? Precalculus Functions Defined and Notation Function Composition 1 Answer mason m Nov 23, 2015 #y=10^x-4# Explanation: Flip the #x# and #y#. #x=log(y+4)# We want to solve for #y#. Remember that #log(y+4)# can also be written as #log_10(y+4)#. #x=log_10(y+4)# #10^x=10^(log_10(y+4))# #10^x=y+4# #y=10^x-4# Answer link Related questions What is function composition? What are some examples of function composition? What are some common mistakes students make with function composition? Is function composition associative? Is it always true that #(f@g)(x) = (g@f)(x)#? If #f(x) = x + 3# and #g(x) = 2x - 7#, what is #(f@g)(x)#? If #f(x) = x^2# and #g(x) = x + 2#, what is #(f@g)(x)#? If #f(x) = x^2# and #g(x) = x + 2#, what is #(g@f)(x)#? What is the domain of #(f@g)(x)#? What is the domain of the composite function #(g@f)(x)#? See all questions in Function Composition Impact of this question 6655 views around the world You can reuse this answer Creative Commons License