Question

If the length of a rectangle is represented by 4n+5 and the width is represented by 3n-1, which algebraic expression represents the perimeter of the rectangle?
a) 4n + 8
b) 7n + 4
c) 7n^2 + 11n - 5
d) (1/2)(7n +4)

Answer 1

2l + 2W = perimeter
2(4n+5) + 2(3n-1) = P
8n + 10 + 6n - 2 = P
14n + 8 = P
looks a and a typo

Answer 2

thats what i thought, just wanted to make sure