Pls help me on this lol

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

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

The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing