Jamaal is planning to invest up to $18000 in City Bank or State Bank He wants to invest at least $2000 in City Bank, but not more than $15000, since State Bank does not insure more than 50000, he wants to invest no more than this amount in State Bank The interest at City Bank is 9%, and the interest at State Bank is 12% How much should be invest in each bark to eam the most interest? What is the maximum amount of interest that Jamaal can ea He should invest City Bank and Sin State Berk