Need pro help, nobody is getting them right. this is my last attempt

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

How do you determine if an ordered pair is a solution to a given equation?