Please provide solutions and steps not just answer. thank you!

1.) A note will mature for its face value of $20,000 in 100 days. You buy the note for $1,000 less than its face value. What are the proceeds?

2.)Brittany bought a discount bond issued by the State of California with a maturity value of $20,000. The discount rate was 3.19% and the term was 175 days. How much did Brittany pay for the bond?

3.) Hall