What am I missing and/or what is incorrect?

After the success of the company's first two months, Santana Rey continues to operate Business Solutions. The November 30, 2021, unadjusted trial balance of Business Solutions (reflecting its transactions for October and November of 2021) follows. Business Solutions had the following transactions and events in December 2021. December 2 Paid \$1,015 cash to Hillside Mall for Business Solutions's share of mall advertising costs. Decerber 3 Paid $480 cash for minor repairs to the company's computer. Decenber 4 Received 54,750 cash from Alex's Engineering Company for the receivable from Novenber. December 10 Pald cash to Lyn Addie for six days of work at the rate of $125 per day. Deceaber 14 Notifled by Alex's Engineering Conpany that Business Solutions's bid of $7, 800 on a proposed project has been accepted. Alex's paid a $1, $00 cash advance to Business Solutions. Deceaber 15 Purchased $1,500 of computer supplies on credit from Harris office Products. Decenber 16 Sent a reninder to Gonez Company to pay the fee for services recorded on llovember 8. December 20 Completed a project for Liu Corporation and received \$6,025 cash. Deceaber 22-26 Took the week off for the holldays. December 28 Received $3,600 cash from Gomez Company on its receivable. December 29 Reimbursed S. Rey for business automobile mileage ( $00 miles at 50.30 per mile). Deceaber 31 Paid $1,160 cash for dividends. After the success of the company's first two months, Santana Rey continues to operate Business Solutions. The November 30, 2021, unadjusted trial balance of Business Solutions (reflecting its transactions for October and November of 2021) follows. Business Solutions had the following transactions and events in December 2021. December 2 Paid \$1,015 cash to Hillside Mall for Business Solutions's share of mall advertising costs. Decerber 3 Paid $480 cash for minor repairs to the company's computer. Decenber 4 Received 54,750 cash from Alex's Engineering Company for the receivable from Novenber. December 10 Pald cash to Lyn Addie for six days of work at the rate of $125 per day. Deceaber 14 Notifled by Alex's Engineering Conpany that Business Solutions's bid of $7, 800 on a proposed project has been accepted. Alex's paid a $1, $00 cash advance to Business Solutions. Deceaber 15 Purchased $1,500 of computer supplies on credit from Harris office Products. Decenber 16 Sent a reninder to Gonez Company to pay the fee for services recorded on llovember 8. December 20 Completed a project for Liu Corporation and received \$6,025 cash. Deceaber 22-26 Took the week off for the holldays. December 28 Received $3,600 cash from Gomez Company on its receivable. December 29 Reimbursed S. Rey for business automobile mileage ( $00 miles at 50.30 per mile). Deceaber 31 Paid $1,160 cash for dividends