Question

F(x) = 5x and g(x) = x + 11.

Which of the following represents h(x) = f(x)g(x)?

h(x) = 5x + 55
h(x) = 5x + 55x
h(x) = 5x2 + 55x <---- correct answer
h(x) = 5x2 + 55

Answer 1

`5x^2 + 55x`

Explanation:

Let's review f(x)g(x) simply means you multiply both functions together.

So,

(5x)(x+11)

5x * x = 5x^2

5x * 11 = 55x

Hence, the answer is
`5x^2 + 55x`

Answer 2

C

Explanation:

f(x) × g(x)

= 5x(x + 11) = 5x² + 55x, thus

h(x) = 5x² + 55x → C