Buying my first property under contract

[Brechman Dieujuste]

Hello bigger pockets community 

I hope you all doing well.

If I need to open a business credit card to use for my real estate business. Since all the properties will be under different llc, will I be able to use it for any of my properties?  Also, do I need to open different bank accounts for each llc because I want them in one account?