Question

f(x) = x^2 + 1 for f(2)

Answer 1

1
5
7

Answer 2

f(2) is simply saying find y when x=2. So, all you would do is plug 2 in for x, making the equation 2^2+1 and then solve. 2^2=4, 4+1=5, and your answer is 5.