Question description

Hello, I need help with this Math problems, and they are starting to worry me,All i need is someone to look at these problems and see if they are right, and if i made an error in these answers please post the correct answer on this and I am.-Check if my answers are correct, – if some are incorrect, please tell me the correct answer and explain later why,Preferred correcting my document by switching  the incorrect answers with the new correct answers thank you anyone that can handle this task in 1 hour?

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