How do you find the inverse of #y = 2^(3 - x)# and is it a function?

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)#?