Answer:
A. neither; 7, -20, 61
Step-by-step explanation:
The sequence 1/3, 0, 1, -2 ...
The difference between the terms are; -1/3, 1, -3......
Looking the difference between consecutive terms in the sequence, we can predict the next differences between the following terms, as the differences form a geometric sequence;
Therefore; -1/3, 1, -3, 9, -27, 81
Thus; the sequence will be;
1/3, 0, 1, -2 , (-2+9), (-2+9+-27), (-2+9+-27+81)
1/3, 0, 1, -2, 7, -20, 61
Hence the next three terms are; 7, -20, 61
