The prefix means 8.How to remember this is a octagon which has 8 sides.Therefore Octa means eight.I hope this helped.
The third one :) I hope I did it right
Here is answer in the picture I hope this will help to you
The answer is B..........................................................
2:3. 2+3=5. So 45 divided by 5 equals 9
9x2 ( the ratio number of country music is 2)
So there are 18 country albums in the collection
