The ticket price, t, for a concert attended by 220 people equals the total revenue, r, divided by the number of people who attended. a. c. t = 220r b. t = 220 - r d. t = 220 + r

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?