Question

Let
f(x)=2x−1andg(x)=3x+1

Then

(f∘f∘f)(x)= ?
(g∘g∘g)(x)= ?
((f∘g)−(g∘f))(x)= ?
((f+g)∘(f−g))(x)= ?

Answer 1

for f(f(f(x)))
first do f(f(x)) see that it is and do f(f(f(x)))