Dominic from "Dominic's Pizza" always bakes p pizzas each day. Currently, it costs him $10 per day to use a brick oven and $2 per pizza for the ingredients. One day Dominic realized that if he switched to an electric oven, the use of the oven would cost him $20 per day, but the ingredients would be cheaper, only $0.80 per pizza. This way, his total expenses for each pizza (including shared oven costs and ingredient costs) would be reduced by $1. Write an equation in terms of p to model the situation.