8ft=how many yards and feet 68in=how many ft and in 3,520y=how many miles

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 is the result of adding the system of equations? 2x+y=4 3x-y=6

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test