The answer would be B, since the other two just have to equal 100.
The slope equals 0.
Hope this helps.
Assuming you want answer 3, which is simply stating to find the area of each rectangle, expressed by the equation A=width x length. Your answers are:
Old carpet: 15 sq ft.
New carpet: 60 sq ft.
Hope this helps!
The expression that is not equivalent is the one that said - 4