A wedding caterer charges a $200 service fee and $24 per plate (cost of food for one guest). Johanna has gotten RSVPs from 72 guests but is still waiting to hear back from the other 18. She also has to pay for her own food and the groom's food, who are not considered guests. Let C(p) represent Johanna's catering cost for p plates of food. a. What is the domain of C(p)? b. What is the range of C(p)?