Find the difference and express the answer in scientific notation. (9.1 x 10^6) - (8.9 x 10^6)

At which value in the domain does f(x) =0?

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

If you could answer these your a life saver