Academic writing: need numeracy knowledge

Hi, I need somebody to answer the questions: 5, 6, 7 and 8 of the attached file. If you can't do all, at least try to do one. They need to be 100 words each, bid here. My budget is $10 per one answer, becase is a really important assignment... Answer 5: 100 words($10) Answer 6: 100 words($10) Answer 7: 100 words($10) Answer 8: 100 words($18) New Freelancer are welcome.