Please help will mark brainliest

Answer this question, only if you know the answer. 30 points and brainliest!

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

Place the following steps in order to complete the square and solve the quadratic equation,