Pls answer fast I will give you hundred points

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

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

What does x = in this equation x+3+2x=x+5