Answer and Explanation:
The adjusting entries are shown below:
a. Salaries expense Dr $1,400
To Salaries payable $1,400
(being salaries expense is recorded)
b. Interest expense ($40,000 × 12% × 1 ÷12) $400
To interest payable $400
(being interest expense is recorded)
c. Account receivable Dr $3,000
To Service revenue $3,000
(being revenue is recorded)
These 3 entries should be recorded