=+Problems Series A Guardian Security Services was established on August 15, 2010, to provide security services. The services provided during the remainder of the month are listed below.

Aug. 18. Issued Invoice No. 1 to Jacob Co. for $325 on account.

20. Issued Invoice No. 2 to Qwik-Mart Co. for $260 on account.

22. Issued Invoice No. 3 to Hawke Co. for $545 on account.

27. Issued Invoice No. 4 to Carson Co. for $450 on account.