0.004 and 3.42 written as a fraction multiplication problem

Which value is not a solution of 8x^3 – 1 = 0

If 25% of y is 30, what is 60% of y?

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%