f(x) = 5x+2,find f(3)
f (x) = 5 (3) + 2 =17
F(x)=5x+2.Function of x is 5x+2, so given the function[F(3)], it means that you have to substitute the value of x with 3 and the simplify. F(3)=5(3)+2 which gives you 17.
