1.Suppose I deposite $3,250 into a 500 day CD (bankers rule).I ended up with the CD being worth $3,327.19.What was the simple interest rate?

2. A retiree wants to be able to draw a $1,800 monthly income from the simple interest on an investment account.If the account pays 2 1/2% simple interest, how much doe she need to have in the account to meet this goal.

3. I have $1,975.35 in my savings account right now.The account pays 1.07% simple interest.Assuming I make no deposits or withdrawals and the rate doesn't change, how long will it be until I reach $2,000 in the account? Answer to be in number of days.