Lori is a student who teaches golf on Saturdays. In a year she earns $25 comma 000 after paying her taxes. At the beginning of 2017, Lori owned $3 comma 000 worth of books, DVDs, and golf clubs and she had $7 comma 000 in a savings account at the bank. During 2017, the interest on her savings account was $280 and she spent a total of $15 comma 000 on consumption goods and services. There was no change in the market values of her books, DVDs, and golf clubs. How much did Lori save in 2017? What was her wealth at the end of 2017?