Stan Still Stationery Store has a calendar year-end. The following transactions occurred during the year for the Stan Still Stationery Store: On October 1, it received $7,200 from a customer for prepaid design services. The customer will be using these design services in an equal amount for the next six (6) consecutive months. On November 1, it paid for an insurance policy for $9,000. It is a one-year insurance policy. You may assume an equal amount of the insurance is used up for each month the policy is valid. $265. It paid the invoice in full on December 28. customer paid the invoice on December 31 On December 15, it received an invoice from the telephone company for On December 18, it billed $2,910 to a customer for printing services. The