Mario's pizza has two choices of crust: deep dish and thin-and-crispy. the restaurant also has a choice of 5 toppings: tomatoes, sausage, peppers, onions, and pepperoni. finally, mario's offers every pizza in extracheese as well as ‘regular’. if linda's volleyball team decides to order a pizza with four toppings, how many different choices do the teammates have at mario's pizza?