Amanager received an invoice for $86.30 for 30gal ice cream. how much did each gallon cost

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

An object in geometry with no width, length or height is a(n):