Question

PLEASE HELP!! if f(x)=x^2 and g(x)=x+1 what is (fog)(2)?

Answer 1

If you substitute the value of g(x) into the place of x in the f(x) equation, you get f(x) = (x+1)^2 which equals x^2 + 2x + 1.

Answer 2

now substitute 2 in.

Answer 3

substitute the value of g(x) into x for the equation of f(x) then substitute 2

Answer 4

or you could substiue 2 into g(x) first. That would get you an answer of 9.

Answer 5

the answer choices are :
1. 5
2. 7
3. 9
4. 12
so its 3?

Answer 6

But either way it's the same answer.

Answer 7

THANK YOU SO MUCH!! <3

Answer 8

The answer's 9. No problem!