Oriole diesel owns the fredonia barber shop. he employs 5 barbers and pays each a base rate of $1,510 per month. one of the barbers serves as the manager and receives an extra $580 per month. in addition to the base rate, each barber also receives a commission of $8.40 per haircut. other costs are as follows. advertising $300 per month rent $1,020 per month barber supplies $0.45 per haircut utilities $150 per month plus $0.15 per haircut magazines $30 per month oriole currently charges $18 per haircut. collapse question part (a) determine the variable costs per haircut and the total monthly fixed costs. (round variable costs to 2 decimal places, e. g. 2.25.) total variable cost per haircut $ total fixed