Final answer:
Lucy will pay back a total of $2,750.40 over 12 months. If she pays off the loan with her fourth payment, she will have paid a total of $2,603.83, saving $146.57 by paying off the loan early.
Step-by-step explanation:
If Lucy makes the monthly payment of $229.20 for 12 months, she will pay back a total of $2,750.40.
To pay off the loan with her fourth payment, Lucy will need to pay her current balance, which is $1,916.23.
If Lucy pays off the loan with her fourth payment, she would have paid a total of
(3 payments of $229.20) + $1,916.23 = $2,603.83.
By paying off the loan early, Lucy will save $146.57, since she avoids paying the remaining 8 payments of $229.20 each.