a. On December 31,201, the Notes Payable account at Northwood Manufacturing Company had a balance of $16,000. This balance represented a three-month, 9 percent note issued on November 1. b. On January 2, 20X1, Hitech Computer Consultants purchased flash drives, paper, and other supplies for $6,050 in cash. On December 31, 20X1, an inventory of supplies showed that items costing $1,550 were on hand. The Supplies account has a balance of $6,050 c. On October 1, 20X1, North Dakota Manufacturing paid a premium of $12,720 in cash for a one-year insurance policy. On December 31, 20X1, the Prepaid Insurance account has a balance of $12,720. d. On June 1, 20X1, Headcase Beauty Salon signed a one-year advertising contract with a local radio station and issued a check for $13,440 to pay the total amount owed. On December 31, 20X1, the Prepaid Advertising account has a balance of $13,440. For each of the above independent situations, prepare the adjusting entries that must be made on the December 31 , 20X1, worksheet assuming no previous adjusting entries have been made during the year. (Round your answers to 2 decimal places.)