Question

How can you find f(3) if f(x) = -2x2 – 4?

Answer 1

-20

Explanation:

Answer 2

Answer: f(3)=-20

Explanation:

If you look at f(x) and f(3), you can see that 3 is in place of x. That means when x=3, what is f(x). You plug in x=3 into f(x) and solve.

f(3)=-2(3)²-2

f(3)=-2(9)-2

f(3)=-18-2

f(3)=-20