Ron puts three pennies in a jar His father offers to triple the total amount of money in ron's jar at the end of each day how much money is in the jar at the end of one week?

the answer is $64.61 you start with 3 and then 3x3=(9)x3=(27)x3=(81)x3=(243)x3=(729)x3=(2187)x3={6561}

then you divide 6561 by 100 because they are pennies so 6561/100 is 65.61 dollars

hope this helps and i just kept tripling it 7 times because it says by the end of the week =)