Please help I beg anyone

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Which expression is equivalent to the expression shown?

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