Asubmarine was at a depth of 225 meters below sea level. it rose 80 meters, then it dove 35 meters. how far below sea level was the submarine after ascending and descending

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?