When x=2 and y=4, which of the following is an equation when x and y vary directly? A. y=2x
B. y=8x
C. y=8x
D. y=2x

Out of the 180 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? 72% 40% 54% 98%