Ahot air balloon launches at 2,100 feet above sea level and rises 75 ft every minute. write an equation to model the height of the hot air balloon above the ground, using h to represent height above ground and m to represent the number of minutes since the hit air balloon takes off.

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