The sequence of the number of flowers Bob put in the vases is as follows:
- First vase: 36 flowers
- Second vase: 30 flowers
- Third vase: 24 flowers
- Fourth vase: 18 flowers
To determine the type of sequence, we can observe the difference between consecutive terms:
- \(30 - 36 = -6\)
- \(24 - 30 = -6\)
- \(18 - 24 = -6\)
The difference between each consecutive term is constant and equal to \(-6\). This indicates that the sequence is an arithmetic sequence, where each term is obtained by subtracting a constant value (in this case, 6) from the previous term.
Thus, the sequence of the number of flowers in the vases forms an arithmetic sequence.