How do i get y alone when 3(–1)+5y=17

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

Write an equation for the function that includes the points (2,100)and (3,100)

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?