10 points, please help me

Answer:
1st can 9$ liters 0.6
2nd can 11.25$ liters 0.75
3rd can 15$ liters 1
4th can 37.50$ liters 2.5
5th can 68.10$ liters 4.54
6th can 76.80$ liters 5.03 (disclaimer) im not positive on this one can
Step-by-step explanation:
Hope this helps