Help asap pls I will give brainliest
what are the first four terms of the sequence represented by the expression n(n-1)-5
1. -7, -5, -3, 1
2. -5, -10, -15, -20
3. 0, 2, 6, 12
4. -5, -3, 1, 7

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?