Answer:
Geometric Sequence
Step-by-step explanation:
1. Check the difference.
The difference between the 1st and 2nd term
[tex]( - 5.4) - ( - 3.6) = - 1.8[/tex]
The difference between the 2nd and 3rd term
[tex]( - 8.1) - ( - 5.4) = - 2.7[/tex]
The difference is not the same. Therefore, it is not an arithmetic sequence.
2. Check the ratio
The ratio between the 1st and 2nd term
[tex]( - 5.4) \div ( - 3.6) = 1.5[/tex]
The ratio between the 2nd and 3rd term
[tex]( - 8.1) \div ( - 5.4) = 1.5[/tex]
The ratio is the same. Therefore, it is a geometric sequence.
