After a few days of orientation and getting to meet with other managers and employees in the company, what should be Mike's first priority in the business unit

Request a meeting with Betty, the previous manager

Explanation:

When assuming a role in an organization it's best to get in touch with the previous manager or head of the department you want to assume and get to know how the office was ran before now that you're about to take over the position. This gives you a platform or a ground on which you as the new manager can work on or work with.

The first priority Mike should look into is meeting with the previous manager, Betty, so she can give him guidance and information

the first one $24,630