Question

If f(x) = 2x – 1 and g(x) = 3x + 5, then (f o g)(x) is equal to

Answer 1

(f◦g)(x) = 6x +9

Explanation:

Use g(x) as the argument to f(x) and simplify.

(f◦g)(x) = f(g(x)) = f(3x +5) = 2(3x +5) -1

(f◦g)(x) = 6x +9