Please help me :( don’t just answer wrong plz

How can constraints be used to model a real-world situation?

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal

The function representing david's miles per month if f(m)= 115m + 5. what does the 115 represent