On March 1, Amy Dart began Dart Delivery Service, which provides delivery of bulk mailings to the post office neighborhood delivery of weekly newspapers, data delivery to computer service centers, and various other delivery services using leased vans. On February 28, Cart invested $15,000 of her own funds in the firm and borrowed $6,000 from her father on a six-month, non-interest-bearing not payable. The following information is available at March 31