Solve 3*k - 13*y + 13 = 0, -86*k + 82*k + 4*y = 4 for k.
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What is the t'th term of 8, 33, 96, 215, 408?
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What is the r'th term of 25, 20, 5, -26, -79, -160, -275, -430?
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What is the q'th term of 60, 309, 724, 1305, 2052, 2965?
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What is the a'th term of 120, 130, 140, 150, 160?
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What is the y'th term of 50, 60, 70, 74, 66?
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What is the i'th term of -1538, -1540, -1542?
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