Question

If f(x) =3x+10, find f(4) A.f(4)=17 B.f(4)=22 C.22 D.f(4)=17

Answer 1

`\large\boxed{B.\ f(4)=22}`

Explanation:

`f(x)=3x+10\\\\f(4)-\text{put x = 4 to the equation of the function}\\\\f(4)=3(4)+10=12+10=22`