货币政策 federal funds rate

货币政策 federal funds rate
课本上的一道应用题 怎么做都做不对也找不到答案 希望有大拿可以帮忙解答下~~
问题如下：
A "Basis point" is one one-hundredth of a percentage point. If an interest rate increases by 50 basis points, it has gone up by one-half of a percentage point. "Monetary aggregates" are measures of the money supply, such as M1 and M2. A federal reserve publication from February 2002 made the following observation:"As the economy slipped into recession last year, the FOMC reduced its targets level for the overnight federal funds rate by 475 basis points to 1.75 percent. Also during the year, growth of the monetary aggregates jumped sharply."
a. If the target for the federal funds rate was reduced by 475 basis points, to 1.75 percent, what was its original level?
b. Is there a connection between the federal funds rate falling and the money supply increasing?
_(:з」∠)_希望可以附上计算的公式 鄙人人比较笨 直接看答案实在是想不太懂... 能解答的比较快的话有大加分ww