The pattern of trucks can be described as follows: Truck #1 has 1 row of 3 squares, truck #2 has 2 rows of 3 squares in each row. This pattern continues where the number of rows with 3 squares equals the truck number. Also, on top, each truck has 2 squares on the top of the longer rows. Write an algebraic rule that you could use to find the number of squares for any truck number. Use x for the truck number and y for the number of squares.