Perimeter = (2)(length) + (2)(height) Let's call the width x and the length y Therefore perimeter = (2x)(2) + (5y)(2)= 4x+10y 2x÷(4x+10y) is the answer :)
All you had to do was plug in the value for c or b and solve. You can tell this is most likely correct because you see patterns for both variables. C is going up by threes, while b is going up by nines.