Help me pls !!!

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

What properties allow transformation to be used as a problem solving tool

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.