Final answer:
More information is needed to determine the average weekly demand for paper purchases by Haley Photocopying and how much they pay per carton.
Step-by-step explanation:
To determine the average weekly demand for paper purchases by Haley Photocopying, we need more information. The given information does not provide any data specific to Haley Photocopying. Without details such as the number of paper purchases made by Haley Photocopying over a certain period, we cannot calculate the average weekly demand.
In addition, the price per carton also depends on various factors such as the type of paper, quantity, quality, supplier, and market conditions. Without specific information about these factors, it is not possible to determine how much they pay per carton.