Answer:
the amount of the adjustment in the Allowance for
Bad Debts account $3.000
Explanation:
Initial Balance
Allowance for Uncollectible Accounts $ 9.000
END Balance
Allowance for Uncollectible Accounts $ 12.000
The adjustment entry in the accountig will be
Bad debt expense $ 3.000
Allowance for Uncollectible Accounts $ 3.000