Question

F(x) = 2x + 1
find f(4)​

Answer 1

Hello!

Answer:

`\Large \boxed{\sf f(4) = 9}`

Explanation:

We have just to replace x by 4:

`\sf f(x) = 2x + 1`

`\sf f(4) = 2 * 4 + 1 = 8 + 1 = \boxed{\sf 9}`

Answer 2

f(4) = 9

Explanation:

to find f(4) substitute x = 4 into f(x) , that is

f(4) = 2(4) + 1 = 8 + 1 = 9