What are the retained earnings equipment 43780 advertising

Question

Question: What are the Retained Earnings?

Equipment                                     43,780

Advertising expense                          3,155

Rent expense                                   3,400

Accounts payable                             5,600

Office supplies                                 2,625

Accounts receivable                        18,440

Common stock                                45,000

Retained earnings                            28,690

Cash                                             39,810

Salaries expense                             12,500

Notes payable                                53,675

Service revenue                             23,510

Utilities expense                               1,275

Furniture                                      22,140

Investments                                 15,800

Interest revenue                            6,450