Plz help ASAP 7th grade math

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is

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?

Me on this i beg you on this to answer!