10^-1/5^-1

i know the answer but please explain how to do it

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 additional information could be used to prove abc =mqr using sas? check all that apply.

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?