Question

If f(x) = x2 and g(x) = x + 1, what is (fºg)(2)?

1.
5
2.
7
3.
9
4.
12

Answer 1

9

Explanation:

To find (f ￮ g)(2) , evaluate g(2) then substitute the value obtained into f(x)

g(2) = 2 + 1 = 3 , then

f(3) = 3² = 9

Answer 2

f(x)=x² , g(x)= x+1. f(g(2))?

g(2)

2+1=3

g(2)=3

f(3)

3²=9

f(3)=9

the answer is 9