An office manager is renting a local hall for an upcoming event. the hall costs $160. the food costs $18 per person. the office manager is not sure how many people will attend. which quantity is not a variable quantitylong dashthe cost to rent the hall, the number of people who will attend, or the total cost of the food? a. the number of people who will attend. b. the cost to rent the hill. c. the total cost of the food.