$3,300 principal earning 4%, it is 3300 * 4 / 100 = $132 so 3,300 + $132 = $3432 (it is for year 1) let's find year 2 the 4% of $3432 is $3432*4/100=$137.28, so $3432 + $137.28 =$ 3569.28 (it is for year 2) the 4% of $ 3569.28 is $142.77 so the amount is $3512.05 so the answer is $3,712.05