+598 A variable rate demand loan showed an intial balance of $9000, payments of $2500 after 6 months, $2500 after 21 months, and a final payment after 4 years. Interest was 8% compounded quarterly for the first 21 months and 7.75% compounded monthly for thr remaining time. What was the size of the final payment?
Any help would be great, need steps
