Question

If f(x) = 2x + 3 and g(x) = x2 + 1, find f(g(3)).

Answer 1

what is \(g(3)\) ?

Answer 2

first solve g(3), substitute the 3 for the x on function g(x)

Answer 3

First evaluate g(3) by replacing the variable x with 3:
\[g(3)=3^2+1\]\[g(3)=9+1=10\]
So, now evaluate:
\[f(10)=2*10+3=20+3=23\]
Done.

Answer 4

Thank you that helped alot i had kept forgeting to square it at first.

Answer 5

No problem =]