Which one is the correct answer???

I'll give brainliest if you answer right : )

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?

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8