What is 31/800 in its simplest form?

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

What is the value of x? enter your answer in the box. photo attached.

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