To find the composition of f and g, denoted as (f ∘ g)(x), you need to perform the operation f(g(x)).
So, first, you apply g(x) to the input x, which gives you 3x + 4. Then, you apply f(x) to the result, which gives you 2(3x + 4) + 1.
Expanding this, you get:
2(3x + 4) + 1 = 6x + 8 + 1 = 6x + 9
So, the composition of f and g is (f ∘ g)(x) = 6x + 9.