geometry word problems

Question

The length of a rectangle is 3n+2 and its width is n-1 . The perimeter of the rectangle is twice the sum of its length and its width. Write an expression that represents the perimeter of the rectangle

Answer 1

L = 3n + 2

W = n - 1

 

P = 2(L + W) = 2[(3n + 2) + (n - 1)] = 2[(3n + n) + (2 - 1)] = 2(4n + 1)