Which relation is a function?

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A. (1,0). (3.0), (1, 1), (3, 1) (1, 3)

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B. (1, 1), (2.2), (3, 3), (4, 4), (5,8)

C. (2, 7). (6.5), (4,4), (3, 3), (2.1)

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D. (9. - 3). (9,3), (4, - 2). (4, 2). (0,0)

B. Which type of infectious agent are a tapeworm, a roundworm, and a hookworm?

Alice takes her favorite number, adds 5 to it, multiplies the answer by 10, subtracts 20 from the result, and then drops the final 0. if alice's (correct) answer is 9, what is her favorite number?

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