Since there is no options, i will list several reasons that help bloggers decide how to present information :
- Audience expectation
- Blogger's point of view and personal principle
- The actual fact that blogger has
I believe this means y=13
Net Price: $ 802.99
+ Sales Tax (7.25%): $ 58.22
Total Price: $ 861.21
So you have 85 pages and 10 days.
You would do 85/10 to get 8.5 pages each day. Hope that’s right !