Answer:
a. Record the adjusting entry related to outstanding checks, if necessary.
No adjusting entry is necessary for recording outstanding checks.
b. Record the adjusting entry related to bank service charges, if necessary.
June 30, 202x, bank fees expense
Dr Bank fees expense 20
Cr cash 20
c. Record the adjusting entry related to Check No. 919, if necessary.
June 30, 202x, adjusting entry for mistake on recording Check No. 919
Dr Cash 9
Cr utilities expense 9
d. Record the adjusting entry related to the June 30 deposit, if necessary.
No adjusting entry is necessary for recording deposits on transit.