Prepare general journal entries on December 31, 2015 to record the following unrelated year-end adjustments. This company makes monthly adjusting entries. a. $6200 of supplies were purchased, the year end count showed $1,000 still on hand. b. Services performed but not billed were $5000. C. An asset was purchased for $300,000 and will last 10 years. No residual value. d. Prepaid insurance of $2500 expired during the monthy. Show calculations