Solve -3*f - 32 = 4*r, -5*r + f - 19 = 2 for r.
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What is the p'th term of -83, -151, -219, -287, -355, -423?
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What is the b'th term of 160, 117, 74, 31, -12?
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What is the r'th term of -9, -7, -5, -3?
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What is the a'th term of 13, 52, 121, 232, 397, 628, 937?
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What is the c'th term of 24, 107, 246, 441, 692, 999?
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What is the h'th term of -1283, -2567, -3851, -5135, -6419?
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