Hey can someone do this for me plz ASAP

1. 5(-2)

2. 6(-4)

3. 4(21)

4. -11(-5)

5. -6(5)

6. –50(0)

7. –5(-5)

8. -4(8)

9. (-6)

10. (-2)

11. (-4)

12. (-5)

Evaluate each expression if a=-5, b=2,c=-3, and d=4.

13, -2d

14. 6a

15. 3ab

16.-120

17. -462

18. ?

19. -5cd

20. 13ab

21. 3c
ASAP