Answer:
a. Account receivable and sales are understated.
Adjusting entry :
Accounts Receivable (Dr.) $21,000
Sales Revenue (Cr.) $21,000
b. Interest receivable is understated.
Adjusting Entry :
Interest Receivable (Dr.) $470
Interest Earned (Cr.) $470
c. Account receivable and sales are understated.
Adjusting entry :
Accounts Receivable (Dr.) $1,460
Sales Revenue (Cr.) $1,460
Explanation:
Adjusting entries will be created for the transactions that are not properly recorded or either completely not recorded. In the given case the customer is not billed for the services rendered. This has an impact on the asset account of the company because account receivable are understated.