Triple Tier Bakery is a locally-owned business offering custom cakes, cupcakes, desserts and wedding cakes. At year end, Triple Tier's balance of Allowance for Uncollectible Accounts is $550 (credit) before adjustment. The Accounts Receivable balance is $22,500. During the next year, Triple Tier estimates that 10% of accounts will be uncollectible. Record the adjustment required for Allowance for Uncollectible Accounts?