Answer:
The amount of the annual payment that Sara must make at the end of each year for 13 years is 1265.75
Explanation:
future value = $23900
FVA(6%,13) = ((1.06^13) - 1)/0.06)
          = 18.88214
amount of annuity payment = future value/FVA
                        = 23900/18.88214
                        = $1265.7464
Therefore, The amount of the annual payment that Sara must make at the end of each year for 13 years is 1265.75