Allan indicates that, at year-end, customers owe him $1,000 accrued service revenue, which he expects to collect early next year. These revenues have not been recorded. During the year, he collected $4,100 service revenue in advance from customers, but the business has earned only $800 of that amount. During the year he has incurred $2,400 of advertising expense, but he has not yet paid for it. In addition, he has used up $2,100 of the supplies. Allan determines that depreciation on equipment was $7,000 for the year. At December 31, he owes his employee $1,200 accrued salary. The rent paid in advance on Jan 2 for $2,800 relates to the period January 2019 through to February 2020. The owner made no capital investments during the year.