Answer:8,650 is the amount he still owes
Step-by-step explanation: well first were going to do 1,000x3=3,000 now were going to do 3,250x3=9,750 now we add 9,750+3,000+4,000=16,750
so now we do the total 25,400-16,750=8,650
this was a lot of work for 5 points :( but i helped you bc im nice :)