23-21 juulmanzlng adjusting entries Consider the following situations: a. Business receives $3,200 on January 1 for 10-month service contract for the period January 1 through October 31. b. Total salaries for all employees is $3,600 per month. Employees are paid on the 1st and 15th of the month. c. Work performed but not yet billed to customers for the month is $1,600. d. The company pays interest on its $16,000 4% note payable of S53 on the first day of each month. Assume the company records adjusting entries monthly. Journalize the adjusting entries needed as of January 31