Carlos is ordering an ice cream dessert. he must order a size, a flavor of ice cream, and a topping. there are 2 sizes, 2 flavors, and 3 toppings to choose from. how many different ice cream desserts could he order?

Out of the 150 students at a summer camp, 72 signed up for canoeing. there were 23 students who signed up for trekking, and 13 of those students also signed up for canoeing. use a two-way table to organize the information and answer the following question: approximately what percentage of students signed up for neither canoeing nor trekking?