Final answer:
The student provided the first term of a sequence, but without a consistent multiplicative pattern of the following terms, we cannot determine the common ratio or verify the sequence as geometric.
Step-by-step explanation:
The question deals with finding the values of the first term u1 and the common ratio r of a geometric sequence. Since the first term u1 is already provided as 3645, we need additional information to determine the common ratio r. The list of numbers provided does not follow the consistent multiplicative pattern expected in a geometric sequence. Therefore, with only u1 provided and without a pattern or additional terms that clearly establish the sequence, it's not possible to find the common ratio or verify that the sequence is geometric. For a geometric sequence, each term should be the previous term multiplied by the common ratio r. Without this clear way of progression, the values ask for cannot be accurately determined.