Question

The length of a square can be written with the expression 3x + 1. What expression can be used to represent the perimeter of the square?

Answer 1

perimeter - add up all the sides

4 sides of a square

3x + 1 + 3x + 1 + 3x + 1 + 3x + 1 (or 4(3x+1))

collect like terms

= 12x+4