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What explicit formula matches the arithmetic sequence -2, 1, 4, 7, 10, ...?
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What explicit formula matches the arithmetic sequence -2, 1, 4, 7, 10, ...?

User MykelXIII
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a_1=-2\\ d=3\\ a_n=a_1+(n-1)d=-2+(n-1)\cdot3=-2+3n-3=3n-5
User Rutgerm
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