Four friends go out to lunch together. Mike orders a personal pizza with 2 toppings for 7.00. Dustin orders a personal pizza with 5 toppings for 9.25. Lucas orders a calzone with 1 topping for 5.75. Will orders a calzone with 4 toppings for 8.75. For what number of toppings is the price of a personal pizza the same as a calzone?
