Answer:
I'm pretty sure the answer is D. You can see that 6 washes is 30 dollars so that would make each wash $5 and all other answers can be proven wrong or not proven to be true.
Answer:
Answer is Choice D, that the pay per wash is 5.00 per wash.
Step-by-step explanation:
Since that is the only point marked (6,30) you divide the total cost (30) by (6) and you get 5.00.