Math problems #21-50

1. Math problem #31
2. Math problem #32
3. Math problem #33
4. Math problem #34
5. Math problem #35
6. Math problem #36
7. Math problem #37
8. Math problem #38
9. Math problem #39
10. Math problem #40
11. Math problem #41
12. Math problem #42
13. Math problem #43
14. Math problem #44
15. Math problem #45
16. Math problem #46
17. Math problem #47
18. Math problem #48
19. Math problem #49
20. Math problem #50