Question

Use the function to answer the question.

Answer 1

Answer:

20x^2 - 1 (fourth possible answer is the correct one)

Step-by-step explanation:

To obtain (f o g)(x), use function g(x) as the input (x) to f(x), as follows:

f(x) = 4x - 1  becomes f(g(x)) = 4g(x) - 1.

But g(x) = 5x^2, so we get:

                                    f(g(x)) = 4(5x^2) - 1

and this simplifies to:    f(g(x)) = 20x^2 - 1