30 POINTS WOW plz answer :)

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

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

Hi, can anyone show me how to do this problem? 100 points for this. in advance