Identify a typical age of the forty people. mean or median? why?

What is the solution to the inequality

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

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is