As of right now, Katie’s college fund has $601.85. If she deposits a check for $225, how much money will she have in her college fund?

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?