MBA after M.Sc in 2015. - What to work on?

Hi. I am a 24 year old student from Norway who is thinking about applying for an MBA in the U.S after my current degree is completed, in 2015. I have a B.A in industrial design engineering and a B.Sc in mathematics. The B.A is from a university college and the B.Sc is from a university. The B.A has ...