Which two functions are inverses of each other? Verify your choice by showing that f(g(x)) = x and g(f(x)) =
x. a) f(x) = 2x, g(x) = x/2 b) f(x) = x², g(x) = sqrt(x) c) f(x) = 3x + 5, g(x) = (x - 5) / 3 d) f(x) = e^x, g(x) = ln(x)