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Consider the set {x^2+x, 9, 10x, x^2-16x}. If the arithmetic mean of

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Consider the set {x^2+x, 9, 10x, x^2-16x}. If the arithmetic mean of this set is 3, which of the following could be the value of x?

A. \(\frac{1}{2}\)
B. 1
C. \(\frac{3}{2}\)
D. 3
E. 4

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