I can't seem to figure out why this is saying my answers are wrong. And I need some general help with this because it is frustrating the hell out of me

On January 1, Pulse Recording Studio (PRS) had the following account balances Accounts Payable Accounts Receivable Accumulated Depreciation-Equipment Cash Cash Equivalents Common Stock Deferred Revenue Equipment Notes Payable (long-term) Prepaid Rent Retained Earnings Supplies $8,300 6,900 6,300 3,610 1,610 10,100 3,700 30,300 12,300 2,700 4,940 520 The following transactions occurred during January a. Received $2,430 cash on 1/1 from customers on account for recording services completed in December b. Wrote checks on 1/2 totaling $4,370 for amounts owed on account at the end of December C. Purchased and received supplies on account on 1/3, at a total cost of $200 d. Completed $3,700 of recording sessions on 1/4 that customers had paid for in advance in December. e. Received $4,900 cash on 1/5 from customers for recording sessions started and completed in January f Wrote a check on 1/6 for $4,080 for an amount owed on account. g. Converted $1,080 of cash equivalents into cash on 1/7, h. On 1/15, completed EFTs for $1,450 for employees' salaries and wages for the first half of January. i. Received $2,790 cash on 1/31 from customers for recording sessions to start in February Required