At Case Western they have a single door admissions policy so you don’t have to apply to the business school or the engineering school. However, if engineering is one of your options, you would need to start on the pre-reqs like Calculus 1-4, Chem, Physics etc. Or you could start with the Chemistry freshman options and add a business class as an elective.
There are majors that might combine CS and Business, or CS and Chem (or what about chemical engineering).
Or maybe you major in CS, minor in a language, and get a job for an international company.