If 5x + 2y = 20 corresponds to 10x + 4y = 40, which of the following corresponds to 3x + y = 9?

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A. 6x + 2y = 18

B. 9x + 3y = 27

C. 12x + 4y = 36

D. 15x + 5y = 45

E. None of the above

Answer: B. 9x + 3y = 27

Both equations are multiples of the original equation, maintaining the same relationship.

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