I don't understand the formula used to find the cash,retained earnings, and accounts recivable. Please explain how I can find my answer

The December 31, 2021, unadjusted trial balance for Demon Deacons Corporation is presented below. Accounts Debit Credit Cash $ 8,709 Accounts Receivable 13,780 Prepaid Rent Supplies 2,709 Deferred Revenue Common Stock 11, eve Retained Earnings 4, 760 Service Revenue 41,84 Salaries Expense 28, 580 $59,240 $59, 240 At year-end, the following additional information is available: 2. Prepare an adjusted trial balance as 1. The balance of of December 31, 2021. Prepaid Rent, $5,640, represents payment DEMON DEACONS CORPORATION on October 31, 2021, Adjusted Trial Balance for rent from November 1, 2021, to December 31, 2021 April 30, 2022. Accounts Debit Credit 2. The balance of Cash Deferred Revenue, Accounts Receivable $1,700, represents payment in advance Prepaid Rent 3,760 from a customer. By Supplies 670 the end of the year, Deferred Revenue $ 1,275 $425 of the services 700 have been provided. Salaries Payable 3. An additional $700 in Common Stock salaries is owed to Retained Earnings employees at the end Service Revenue of the year but will not be paid until January Salaries Expense 4, 2022. Rent Expense 1,880 4. The balance of Supplies Expense 2,030 Supplies, $2,700, Totals $ 8,340 $ 1,975 represents the amount of office supplies on hand at the beginning of the year of $1,050 plus an additional $1,650 purchased throughout 2021. By the end of 2021, only $670 of supplies remains