Question

The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 3x + 5 and g(x) = x2.

!!* Find f(x) • g(x).*


A) 3x^2 + 5


B) 3x^3 + 3x^2 + 5


C) x^2 − 3x − 5


D) 3x^3 + 5x2

Answer 1

D

Explanation:

f(x) × g(x) = (3x + 5) × x²

multiply each term in the first factor by x²

= 3x × x² + 5 × x² = 3x³ + 5x² → D