Two plans for reaching a goal are given below. plan a: save $450 over the next 8 weeks by working 9 hours per week at $7.20 per hour. plan b: save $450 over the next 6 weeks by working 15 hours per week at $6.50 per hour. which of the following is a true statement?

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?