The factors of -18 are 1, 2, 3, 6, 9, 18 and their negative counterparts :)
X=2 I believe but I need to keep typing to make it longer
5.50 goes into 60.50 13.50 times
1) In school, you will encounter percentages on class assignments to see how much progress you made in an subject.
2) On a cell phone, you encounter percentages by how much your cell phone is charged in order to know if you need to charge the battery or not.