Question

Let fx=3x+2 then f(3) Simple functions

Answer 1

F(3)= 3.(3)+ 2
F(3)= 9+2
F(3)= 11 .
I hope that helps.

Answer 2

$f(x)=3x+2\\f(3)=3(3)+2\\f(3)=9+2\\f(3)=11$

We substitute x = 3 in the equation and get the y-value.