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OpenStudy (anonymous):
What is the 12th term of the arithmetic sequence where a1 = 5 and a6 = 20
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OpenStudy (anonymous):
the sequence goes up by 15 in 5 equal steps (hence3 each time - 5,8,11,14,17,20). General formula 3a+2 making the 12th term - 3x12+2 = 38
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