all 4 parts of the problem please and thank you :)

Blossom Diesel owns the Fredonia Barber Shop. He employs 4 barbers and pays each a base rate of $1,200 per month. One of the barbers serves as the manager and receives an extra $500 per month. In addition to the base rate, each barber also receives a commission of $4.60 per haircut. Other costs are as follows. Advertising $200 per month Rent $900 per month Barber supplies $0.30 per haircut Utilities $150 per month plus $0.10 per haircut Magazines $15 per month Blossom currently charges $10 per haircut