This is slope pt 2 pls help there is 3 more

Sara needs to take a taxi to get to the movies the taxi charges $4.00 for the first mile and then $2.75 for each mile after that if the total charge is $20.50 then how far was sara’s taxi ride to the movie

Which equation matches the graph shown ?

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,