Solve -6*r - 2*x = -5*r - 8, r = 2*x for r.
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What is the b'th term of -1, -86, -227, -424?
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What is the r'th term of 42, 170, 384, 684, 1070, 1542?
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What is the d'th term of 7, 3, -13, -47, -105, -193, -317, -483?
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What is the w'th term of -71, -150, -231, -314, -399, -486, -575?
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What is the b'th term of -201, -158, -117, -78, -41, -6?
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What is the s'th term of 1408, 1406, 1392, 1360, 1304, 1218, 1096?
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