Here are the answers to the practice test: Note: x^2 means x to the second power

1. -6a^3b^8

2. w^9z^21

3. 10a^4b^8

4. d^7
    2a^5

5. 3r^5t

6. 4.02 x 10^-6

7. 4.1952 x 10 ^-3 ; 0.0041952

8. 2 x 10^3 ; 2000

9. 5

10. x^3 + 3x^2 - x -3 ; 1

11. 4m^2 - 6m + 1

12. 8y^2 - 4y - 9

13. 6w + 10

14. 6x^4y^2 - 15x^3y^3 + 24x^4y^4

15. 9r^4 - 25t^4

16. 6n^3 + n^2 -10n +3

17. 25y^2 +60y + 36

18. 4k^2 - 25r^2

19. 4c^2 - 4c + 1

20. 0.25w^2 + 0.5bw + 0.25 b^2

21. 15,525 + 0.005x = t

22. $10,000 at 4% ; $5,000 at 3.5%

23. 13

24. -2

25. length is 10 ft, width is 5 ft.

Bonus: 11 terms