Please very soon I offer the crown

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

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

What is the approximate value of  q  in the equation below? –1.613–1.5220.5853.079