In each part of this problem, information about a sequence

Last updated: 8/6/2022

In each part of this problem, information about a sequence or series is given. Use the given information to determine the requested information. a) sequence is arithmetic, with a3 = −8 and a = −26; find a10 b) series is arithmetic, with S21 = -1764 and a₁ = 1; find d c) series is geometric, with a2 = -8/3 and a5 = 64/81; find S6 d) series is geometric, with r = -2 and S5 = 33; find a3