K/7=32/56? i have no idea how to solve this

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 anwers for 9+2x=5x-3-x

Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is