Question

let f(x)=x+1 and g(x)=x^2-x. (f+g)(-4)

Answer 1

are you sure that it's f + g not f OF g?

Answer 2

Yes

Answer 3

well okay, let me try this...

So what you do is they are first asking what is G of -4 right? (I'm guessing)
so plug in -4 for g(x) so x =-4
therefore it is...
-4^2-(-4)=12
so thats your new g...

now f
do the same
f(x)=x+1
4+1 = 5

so F + G
5+12 = 17