The formula for interest is I=PRT where I is interest, P is principal , R is rate and T is time. P=$800 R=6% T=4 I=? I=$800*6/100*4=$192 Therefore the interest is $192
The answer is $192 You would take $800 and multiply it by .06 which is 6% which equals 48 then you would take 48 and multiply it by 4 years which gives you the total of $192.