a=p(1+r)^t a=final number p=principal balance (initial)**without interest** r=interest rate t=the amount of time p=$4000 t= 7yrs r=2%=0.02 we need to turn 2% into a decimal, to do that you divide 2 by 100 which is 0.02 now we rewrite the equation- a=4000(1+0.02)^7 a=4000*1.1486
so 5 quarters is 1 dollar and 25 cents then add 2 dimes its 1 dollar and 45 cents then u add 15 because of 3 nickles and so it makes it 1 dollar 60 cents