Please help! How do I solve this?

Simplify the expression 10/11(22z) + (a+5) -1

Which best describes a central bank's primary goals? limiting inflation and reducing unemployment reducing unemployment and maintaining cash flow controlling stagflation and reducing unemployment managing credit and ensuring the money supply's liquidity

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?