SOLUTION: Indicate whether each of the following sequences, (A) is geometric, arithmetic, or neither. (B) If geometric, give the common ratio. If arithmetic, give the common difference.

Algebra ->  Sequences-and-series -> SOLUTION: Indicate whether each of the following sequences, (A) is geometric, arithmetic, or neither. (B) If geometric, give the common ratio. If arithmetic, give the common difference.       Log On


   

Question 973208: Indicate whether each of the following sequences,
(A) is geometric, arithmetic, or neither.
(B) If geometric, give the common ratio. If arithmetic, give the common difference.

1. ( 8,11,13,15,...)
2. (3,-6,12,-24,...)
3. (8,12,16,20,...)
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
The first has neither a common ratio nor a common difference. It isn't clear what the next term will be. It could be two from then on, or it could change to 1 or 3.
The second is geometric with a common ratio of (-2). The next term will be +48.
The third is arithmetic with a common difference of 4.