How would we set the conditions like positive nonintegers when doing regression?

if there is a election for the new sat owner, who should be the new sat owner??( hypothetical scenario btw) you can vote base on their experience with sat, social contribution to this community, or a purely random reason! Note: i will post sth sat related soon

What do I do at this point? I'm using the SAT Desmos course but it's looks like he's able to put it in and not have to do anything else, so I am a little confused. I am trying to find X: in(x)+2=x-1. Help is appreciated.

LES GO!