Please solve -5x+3(2x+4)=15

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

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

What is the distance between (3,k+1) and (2k,k-1)