Answer:
A
Step-by-step explanation:
Geometric sequences have a pattern that is exponential. Because of this, they do not have a constant rate of change using addition or subtraction. Instead, they have a constant rate through multiplication and division called a common ratio. Tank 1 is geometric because as you subtract each y value you get a different value each time. It is not a common difference. But if you divide, you find a common ratio.
Example: 249-300= -60 240/300 = 0.8
192-240 = -48 192/240 = 0.8
etc. Common ratio of 0.8
Arithmetic sequences have a pattern that is linear. Because of this, they do have a constant rate of change using addition or subtraction. This means that the same value is added or subtracted each time to get the next value. It is known as a common difference. Tank 2 is arithmetic because you subtract 40 each time to get the next volume.
Example: 260 - 300 = -40
220 - 260 = -40
Common difference is -40.
This means that only A is correct.
D is not correct because geometric sequences do not have common differences.
