Melissa impressed her boss by making lots of suggestions for department improvements and by putting in many weekend hours to do extra tasks to develop the new procedures. melissa is exhibiting

Melissa is exhibiting organizational citizenship behavior.
This term refers to the fact that a person is willing to do something which isn't exactly a part of their everyday job. So here, Melissa put in extra hours in order to create something new for her company and impress her employer in the process.

The federal reserve took an expansionary approach during the crisis. this was done by expanding the money supply and boosting liquidity. this can be seen in the fed's actions of lending to banks, purchasing securities, and lowering the federal funds rate in order to lower overall interest rates. the fed's goal was to increase consumer spending and overall liquidity within the system, and they pursued this by expanding the supply of liquid money.