Question

If `g(x) = 2x-5`, how do you find g(1/3)?

Answer 1

`g(1/3)` means that instead of `x` you have `1/3` or that your function `g(x)` is evaluated in `x=1/3`, so:
`g(1/3)=2*1/3-5=` and rearranging:
`=(2-15)/3=-13/3`

This means that your function `g(x)` has value equal to `-13/3` when `x=1/3`