Question

F (4)=-3×^2-2 g (×)=-2×+2 find f (4) and g (7)

Answer 1

I'm pretty sure you meant:

`f(x) = -3x^2-2`

`g(x) = -2x+2`

To evaluate a function at a certain value, you just have to plug that certain value into the function. Basically, replace all x's with the one given. Let's do f(x) first:

`f(4) = -3(4)^2-2=-3(16)-2 = -48-2 = -50`

So, for f(x), your answer is -50.

Let's do the exact same thing for g(x):

`g(7) = -2(7)+2 = -14+2 = -12`

Your answer for g(x) is -12.

Hopefully, this makes sense!