We are given 85
Firstly, we will find all possible factors of 85
we can write it as

so, exponential form is
................Answer
Two !!!! ... unless this is some riddle and there's a huge in depth meaningful answer i'm unaware about o.O
Answer:
9d = the cost of the tennisballs
Step-by-step explanation:
If you take the 6 and subtract it by 2 you will get 4