Over the past 35 years, the prevailing market yield or discount rate on 90-day T-bills has ranged

Question:

Over the past 35 years, the prevailing market yield or on 90-day T-bills has ranged from a low of 0.20% in May 2009 to a high of 20.82% in August of 1981.
(The period from 1979 to 1990 was a time of historically high inflation rates and interest rates.) How much more would you have paid for a $100,000 90-day T-bill at the May 2009 than at the August 1981 Discount Rate
Depending upon the context, the discount rate has two different definitions and usages. First, the discount rate refers to the interest rate charged to the commercial banks and other financial institutions for the loans they take from the Federal... Face Value
Face value is a financial term used to describe the nominal or dollar value of a security, as stated by its issuer. For stocks, the face value is the original cost of the stock, as listed on the certificate. For bonds, it is the amount paid to the...