I need help with these 4 questions, 2 of them are rather easy questions but im still not sure on my answer, and the other 2 i dont know what to do, i...

I need help with these 4 questions, 2 of them are rather easy questions but im still not sure on my answer, and the other 2 i dont know what to do, i attached  the questions in the attachments

• Attachment 1
• Attachment 2
• Attachment 3
• Attachment 4