Record journal entries for the following transactions a. On December 1, 511.450 was received for a service contract to be performed from December 1 through Apr 30. If an amount box does not require an entry, leave it blank Dec. 1 b. Assuming the work is performed evenly throughout the contract period, prepare the adjusting journal entry on December 31. If an amount box does not require an entry, leave it blank Dec. 31