Brooke Works Part-Time as a Waitress in a Restaurant

Brooke works part-time as a waitress in a restaurant.For groups of 7 or more customers,the customer is charged 15% of the bill for Brooke's services.For parties of less than 7,the tips are voluntary.Brooke received $12,000 from the groups of 7 or more and $6,000 in voluntary tips from all other customers.Brooke must include $18,000 ($12,000 + $6,000)in gross income.