Answer:
B
Step-by-step explanation:
(f • g)(x)
= f(x) × g(x)
= (3x + 1)(x² - 6)
each term in the second factor is multiplied by each term in the first factor, that is
3x(x² - 6) + 1 (x² - 6) ← distribute both parenthesis
= 3x³ + 18x + x² - 6
= 3x³ + x² + 18x - 6 ← in standard form
