It's C ray AC because it's the same length just opposite
6 is d, 7 is b, 8 is c, 9 is c
It is impossible as 8 is bigger than 7 and you can’t take it away ur welcome
Some rational numbers are
2.71, 2.72, 2.73, 2.74, 2.75, 2.76, 2.77, 2.78, 2.79
2.711, 2.712 2.713....
2.721, 2.722, 2.723....
2.731....
I think you get the point! Hope this helped!