Suppose Emma had deposited another $500 into a savings account at a second bank at the same time. The second bank also pays a nominal (or stated) interest rate of 9% but with quarterly compounding. Keeping everything else constant, how much money will Emma have in her account at this bank in 11 years

It's 15dollars more

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.