Question

How do you evaluate the function `f(x)=3x-7` for x=4?

Answer 1

`5`

Explanation:

Substitute `4` into the function everywhere that there is an `x`.

You would get

`3(4)-7`
`=12-7`
`=5`
`f(4)=5`

`f(4)` is the same thing as evaluating the function for `x=4`.