Explantion:
1. We do 6 x 54% = b
2. We do 6 x 54% which equals 3.24 then we do 3.24(5)
3. We do 3.24 x 5 = b
4. We do 3.24 x 5 which equals 16.2
Therefore, 16.2 would be the height of the 5th bounce of the ball
If you have any questions about this answer let me know.