Math question

Hello everyone, I hope everyone is doing well. I have attached a zip file that has three pictures 

I need questions from 1 to 6 solved please, and I want you to chose to answer 4 questions any easy four questions from 7 to 12, and I also want you to solve 4 questions from 13 to 19. 

Conclusoion, I need you to answer only 16 questions and I need them in a file that explains how you solved them and I want you to number the questions please