Sandy wears contact lenses. She starts the year with 5 pairs of lenses, and she uses 3 pairs of contacts every 2 months. Write an equation in standard form to represent Sandy's supply of contact lens pairs, y, after x months.

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle