Solve 5*r = 2*r + 4*b - 12, 0 = r + 4*b + 4 for r.
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What is the n'th term of -13, -44, -87, -136, -185?
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What is the j'th term of -269, -272, -275, -278, -281?
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What is the l'th term of -3312, -6626, -9940, -13254, -16568?
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What is the m'th term of 24, 13, -12, -57, -128, -231?
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What is the q'th term of -10, -27, -62, -121, -210, -335?
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What is the r'th term of 140, 273, 396, 503, 588, 645, 668?
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