Final answer:
The rule to find the number of squares in any figure in the pattern is xPx9 = x(p+q)
Step-by-step explanation:
The rule to find the number of squares in any figure in the pattern can be represented as xPx9 = x(p+q). Here, 'x' represents the number of figures in the pattern, 'P' represents the number of sides of each figure, 'p' represents the number of squares on the inside of each figure, and 'q' represents the number of squares on the outside of each figure.