What are the answers to Holt pre algebra lesson 6-3 practice b?

1. -10

2. 2

3. 2

4. 2

5. 2

6. 1

7. 1

8. -2

9. -1

10. 3

11. 3

12. 3

13. 3

14. -3

15. -2

16. -2