In 2016, Jane taught music and earned $30,000. She also earned $4,000 by renting out her basement. On January 1st, 2017, she quit teaching, stopped renting out her basement, and began to use it as the office for her Web site design business. She took $2,000 from her savings account to buy a computer.

During 2017, she paid $1,500 for the lease of Web server and $1,750 for high-speed Internet service as well as $300 for office supplies. Her total revenue from Web site designing was $45,000 and she earned interest at 5% on her saving account balance. A the end of 2017, Jane could have sold her computer for $500.

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