can u help me

You cannot use log, combinations and factorials

1. For each sequence, i) 31, 36, 41, 46... ii) 5, 10, 20, 40... a) state the general term b) state the recursive formula c) find to d) find the sum of the first 12 terms 2. Determine 17th term of (do not use "trial and error", show algebraic steps) a) the arithmetic sequence with t, = 15 and 12 = -12 b) the geometric sequence with t, =162 and to = 4374