I know its alot but
Find each difference.
3. 6 4 4. 7 (12) 5. 12 16 6. 5 (19)

7. 18 (18) 8. 23 (23) 9. 10 (9) 10. 29 (13)

11. 9 15 12. 12 14 13. 22 (8) 14. 16 (11)

Evaluate x y for each set of values.
15. x 14, y 2 16. x 11, y 11 17. x 8, y 15

18. x 9, y 9 19. x 9, y 20 20. x 20, y 25

21. The high temperature one day was 1 °F. The low temperature
was 5 °F. What was the difference between the high and low
temperatures for the day?

22. The temperature changed from 5 °F at 6 P. M. to 2 °F at
midnight. How much did the temperature decrease?