for each pair of functions, find f(g(x)) and g (f(x)).

1. f(x)= x^3 g(x)= 2x
2. f(x)= 3x+5 g(x)= 4x-2
3. f(x)= 2x+5 g(x)= x^2+2

I'd like an answer and explanation pleasee​