A local carpet cleaning company charges $11.25 for each room plus a reservation fee of $9. They clean a maximum of 5 rooms. Also, they have the policy that once a reservation is made, if you cancel, the reservation fee is non-refundable and they only clean full rooms not partial rooms. Let C represent the total cost from the carpet cleaning company and n represent the number of rooms cleaned. Note: Round your answers to two decimal places as needed. You may need to use set notation for your domain and range { }. Practical Range: