this is just for the first page
1: 9
2: 9.2
3. 1/4
4. 10.2
5. 99
6. 2 1/7
7. 15.9
8. 125
9. 200
10. |15| and |-15|
11. <
12. =
13. <
14. >
15a. boat A is 33 and boat B is 25
15b. boat B is closer
16. -12, -9, 0, |-7|, 12, |-13|
17. -17, -15, |-16|, |-18|, |-20|, 22
18. 0
19. 4
20. -3
