Im bored someone talk to me please

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

Select the quadratic that has root x = 8 and x = -5

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.