Michael is helping to plan a family reunion. A park charges $200 plus a charge of $2 per person to rent out its pavilion for the day. This situation can be represented by the equation y = 2x + 200 where y is the total cost and x is the number of people attending the reunion. Another local park charges the same deposit, but $3 per person. What should be changed in the equation y = 2x + 200 to represent this situation?