Question

Can somebody help me

Answer 1

-84

Explanation:

When you see f(x) is the same as y but if x is replaced with a numerical value, X IS EQUAL TO IT. In this case, use x as -5.

So everytime you see x, replace it with -5 to get your answer.

`-4(-5)^2-5(-5)-9=-84`

f(x) = -84

Answer 2

-84

Explanation:

Plug in -5 for every value of x

-4(-5)^2 - 5(-5) -9