Select is a function or is not a function to correctly classify each relation. is a function or not a function{(2, , , , 8)} {(0, , , , 4) {(1, , , , 3)} {(3, , , , 3)}

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?