How to derive simple interest formula.

On january 1, 2017, sophie's sunlounge owned 4 tanning beds valued at $20,000. during 2017, sophie's bought 3 new beds at a total cost of $14 comma 000, and at the end of the year the market value of all of sophie's beds was $24 comma 000. what was sophie's net investment

Hundreds of a bank's customers have called the customer service call center to complain that they are receiving text messages on their phone telling them to access a website and enter personal information to resolve an issue with their account. what action should the bank take?

Copan italia is a distributor of laboratory products and manufacturer of laboratory commodities, including transfer pipettes and flexible hematology cups used on a variety of automatic instruments to count blood corpuscle elements. copan's says that the company's business is to continually work to improve the quality of the collection and preservation of the microbiological sample in the "pre-analytical phase," as the demand for better protection of the specimen is growing day by day.