Why did we add back 30,000 for depreciation and not the full 36K?

On september 12, ryan company sold merchandise in the amount of $5,800 to johnson company, with credit terms of 2/10, n/30. the cost of the items sold is $4,000. ryan uses the periodic inventory system and the net method of accounting for sales. on september 14, johnson returns some of the non-defective merchandise, which is restored to inventory. the selling price of the returned merchandise is $500 and the cost of the merchandise returned is $350. the entry or entries that ryan must make on september 14 is (are): multiple choice sales returns and allowances 490 accounts receivable 490 merchandise inventory 350 cost of goods sold 350 sales returns and allowances 490 accounts receivable 490 sales returns and allowances 500 accounts receivable 500 sales returns and allowances 490 accounts receivable 490 merchandise inventory 343 cost of goods sold 343 sales returns and allowances 350 accounts receivable 350

Insurance companies have internal controls in place to protect assets, monitor the accuracy of accounting records and encourage operational efficiencies and adherence to policies. these internal controls are generally of two types: administrative controls and accounting controls. administrative controls are the policies and procedures that guide the daily actions of employees. accounting controls are the policies and procedures that delineate authorizations of financial transactions that are done, safeguard assets, and provide reports on the company’s financial status in a reliable and timely manner. internal controls should include both preventative and detective controls. the purpose of preventative controls is to stop problems and errors before they occur. detective controls identify problems after they have occurred. preventative controls are usually more effective at reducing problems, but they also tend to be more expensive. internal controls must be flexible to adjust for changes in laws and regulations in addition to adding new products or modifying current ones. companies must also do regular analyses to ensure that the benefits of implementing the controls are worth their costs. when concerned about paying unwarranted insurance claims which type of control would be useful?

Required prepare the necessary adjusting entries in the general journal as of december 31, assuming the following: on september 1, the company entered into a prepaid equipment maintenance contract. birch company paid $3,400 to cover maintenance service for six months, beginning september 1. the payment was debited to prepaid maintenance. supplies on hand at december 31 are $3,900. unearned commission fees at december 31 are $7,000. commission fees earned but not yet billed at december 31 are $3,500. (note: debit fees receivable.) birch company's lease calls for rent of $1,600 per month payable on the first of each month, plus an annual amount equal to 1% of annual commissions earned. this additional rent is payable on january 10 of the following year. (note: be sure to use the adjusted amount of commissions earned in computing the additional rent.)