Aline drawn from two points on a circle and passing through the interior of a circle would be what?

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

Taking algebra two apex courses and need with these questions

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1