Which of the following equations is the result of cross multiplying the given proportion?

4/k+3=-2/k-5

-2(k-5)=4(k+9)
(-2)(4)=(k-5)(k+9)
-2(k+9)=4(k-5)

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?