Answer:
Geometric
Step-by-step explanation:
It would be geometric since your multiplying to get your next number, (for this, multiplying by 5) If it was arithmetic you would be adding or subtracting to get your next number.
Not sure what do with the other numbers? Like the -2/5
Maybe put them instead of the 2/3?
I got 20.
I may have done it wrong so maybe wait until others have answered.
Cubic root (8)^x = 8^(x/3)
Answer: Option d. 8^(x/3)
