How many 2/3 cups servings are in a 5 cup box

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

Can someone me with this? i’m not sure what to put for my equations.

What is the interquartile range (iqr) of the data set represented by this box plot?