Answer:
$15,000.
Step-by-step explanation:
So, in this particular question we are given the following parameters or data or information which is going aid us in solving the problem;
=> "At December 31, Tremble Music had account balances in Accounts Receivable of $300,000 "
=>" At December 31, Tremble Music had account balances in Allowance for Uncollectible Accounts of $1,000 (credit) before any adjustments"
=> "An analysis of Tremble's December 31 accounts receivable suggests that 5% of the account balances are not expected to be collected"
So, looking at the third point from the question above, we see that "accounts receivable suggests that 5% of the account balances", thus, we have that;
$300,000, which is the account receivable multiply by 5%. That is;
$300,000 × 5/100 = $15,000.