Determine whether each sequence is arithmetic, geometric, or neither. If the Sequence is arithmetie, give the common difference: it geometrie, give the common ratio. 1) 6,18,54,162,... 2) 4,10,16,22,... 3) 1,1,2,3,5,8 4) 625,125,25,5,... 5) 5,8,13,21,34,...