I need help with 4,8,12,16,18 I missed school so much last week and an am behind.

Answer:
4: 376 8: -708 12: -59 16: 0 18: -1,884
Step-by-step explanation:
I have really bad eyesight so, I hope I read all the numbers correctly. I hope you get caught up, it sucks to be behind in class.