Answer:
The answert is "$0.007 / bottle".
Step-by-step explanation:
Please find the complete question in the attachment file.

The average income:

The change rate on the average revenue:

when 81 bottles were produced
, then the rate of change in average revenue
The average income is decreasing at rate = $0.007 / bottle
Answer:
3.
415926535
Step-by-step explanation:
Answer:
I think its 30.36
Step-by-step explanation: