Nick lives in San Diego and runs a business that sells pianos. In an average year, he receives $723,000 from selling pianos. Of this sales revenue, he must pay the manufacturer a wholesale cost of $423,000; he also pays wages and utility bills totaling $267,000. He owns his showroom; if he chooses to rent it out, he will receive $2,000 in rent per year. Assume that the value of this showroom does not depreciate over the year. Also, if Nick does not operate this piano business, he can work as a financial advisor, receive an annual salary of $20,000 with no additional monetary costs, and rent out his showroom at the $2,000 per year rate. No other costs are incurred in running this piano business.

Identify each of Darnell's costs in the following table as either an implicit cost or an explicit cost of selling pianos.

Insurance companies have internal controls in place to protect assets, monitor the accuracy of accounting records and encourage operational efficiencies and adherence to policies. these internal controls are generally of two types: administrative controls and accounting controls. administrative controls are the policies and procedures that guide the daily actions of employees. accounting controls are the policies and procedures that delineate authorizations of financial transactions that are done, safeguard assets, and provide reports on the company’s financial status in a reliable and timely manner. internal controls should include both preventative and detective controls. the purpose of preventative controls is to stop problems and errors before they occur. detective controls identify problems after they have occurred. preventative controls are usually more effective at reducing problems, but they also tend to be more expensive. internal controls must be flexible to adjust for changes in laws and regulations in addition to adding new products or modifying current ones. companies must also do regular analyses to ensure that the benefits of implementing the controls are worth their costs. when concerned about paying unwarranted insurance claims which type of control would be useful?