I hope this helps you
1)
9500.10%=950 in one year
7.950=6650 in 7 years
9500+6650=16150 total
2)
9000.11%=990 in one year
8.990=7920 in 8 years
9000+7920=16920 total
3)
13000.10,5%=1365 in 14 months
13000+1365=14365 total
4)
20000.18,5%=3700
20000+3700=23700