Safe Home provides house-sitting for people while they are away on vacation. Some of its customers pay immediately after the job is finished. Some customers ask that the business send them a bill. As of the end of the year, Safe Home has collected $540 from cash-paying customers. Safe Homes remaining customers owe the business $3,090. Safe Home recorded $540 of service revenue for the year. If Safe Home had recorded their service revenue using the other method, how much service revenue would they have recorded for the year?