Xavier has started to build an investment portfolio for his retirement. (show all work) He bought a $1000 Canada Savings Bond (CSB) at the end of each year for 5 years. The first three CSBs earned a fixed rate of 5.2% interest, compounded annually. The next two CSBs earned a fixed rate of 5.6% interest, compounded annually. Two years ago, he bought a $10,000 GIC earning 7% interest, compounded monthly over a term of 2 years. (a) What was the value of Xaviers portfolio after 5 years? What is the rate of return? (b) Xavier redeemed his portfolio because interest rates went up. He invested all the money in a savings account that earned 8.1%, compounded semi-annually. About how long will it take Xavier to double the money in his savings account?