Solve 5*t + 20 = 5*r + 55, 4*t - 20 = 0 for r.
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What is the k'th term of 4217, 8431, 12645?
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What is the c'th term of 7, -4, -27, -68, -133, -228, -359?
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What is the f'th term of 2205, 4427, 6637, 8829, 10997, 13135?
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What is the p'th term of 295, 589, 883, 1177?
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What is the l'th term of -28, -84, -172, -286, -420, -568, -724?
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What is the c'th term of -6861, -6853, -6833, -6795, -6733?
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