Pls need help quick... thanks so mutch

Which expression is not a polynomial?

Which expression is rational? 6. , square root two, square root 14, square root 49

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?