What is 270qt: 105 gal in simplest form

What is the area of triangle abc if a = 8, b = 11, and c = 15?

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

15/16 as a decimal rounded to the nearest hundredth