solution
We know that the length is given by l = n-1.5
And the perimeter is given by:
P = 4l
Where P= perimeter an dl = side of the length
So then we have:
P = 4(n-1.5) = 4n -6
And the possible equivalent expressionas are:
a) n+n+n+n -1.5-1.5-1.5-1.5 = 4n -6
c) 2(n-1.5) + 2(n-1.5) = 2n -3 +2n -3 = 4n -6
d) 4(n-1.5) = 4n -6
