Please do question 18.4. the examples they said in the questions are those 18.1 and 18.2

18.4) What annual interest rate is implied by your answer to Exercise 18.2? Is it the same as the rate in Exercise 18.3? Why would this comparison matter?

(18.1)You will receive a $10,000 insurance payment in two months. If you are willing to pay for expedited handling, you can be paid in one month. Would you be willing to pay $50? $100? $200? More?

18.2)You will receive a $20,000 insurance payment in 12 months. If you are willing to accept a reduced payment, you can be paid in 11 months. Would you be willing to accept $19,800? $19,500? $19,000? Less)