9. A local pharmacy orders 15 copies of a monthly magazine. Depending on the cover story, demand for the magazine varies. The pharmacy purchases the magazines for $2.25 and sells them for $5.00. Any magazines left over at the end of the month are donated to hospitals and other health care facilities. Modify the newsvendor example spreadsheet to model this situation. Investigate the financial implications of this policy if the demand is expected to vary between 5 and 15 copies each month.