Jamaal is planning to invest up to $23000 in City Bank or State Bank. He wants to invest at least $1000 in City Bank, but not more than $5000; since State Bank does not insure more than $20000, he wants to invest no more than this amount in State Bank. The interest at City Bank is 8%, and the interest at State Bank is 9% How much should he invest in each bank to earn the most interest? What is the maximum amount of interest that Jamaal can earn? He should invest in City Bank and $ in State Bank. The maximum amount of interest that Jamaal can earn is $