graph the line the represents a proportional relationship between y and x where the unit rate of change of y with respect to x is 4/5. In other words, a change of 1 unit in x corresponds to a change of 4/5 units in y

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

Just tell me how to set up the equation.

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?