What is 50% of 28? What is the answer

Regular price 75$ discount 25%sale price?

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

Combine the information in the problem and the chart using the average balance method to solve the problem.