The bus to washington has traveled 5/6 of the way there. if it has traveled 80 miles how much further does it need to go?

Can anyone me with 32,33,36,37,and 40.

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

Solve: 3x+y=6 4x-2y=18 show all work !