Compare the decimals 6,324.50 and 6,324.5

On a piece of paper graph f(x)=5•(0.4)^x

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

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression