Question 1: Alex Davidoff (AD) and Paul Davidoff (PD) are twins. AD started investing for retirement when he was 20 and invested $150 monthly that gives him the rate of return of 7% compounded monthly. PD started investing for retirement when he was 25 and invested $150 monthly that gives him the rate of return of 7% compounded monthly. AD and PD did not make any other investments for retirement other than the mentioned above. They both retire in the same year. Who will have more money from their investment when they retire? Please explain using annuity formula, or any other appropriate approach. Question 2: You are analyzing an investment plan that will pay you $2,500 today and $2,500 at the I end of each year for the next 10 years. For the investment projects of this risk, you would need the annual return of 12%. For that project, you are required to invest $15,000 today. Will you invest? Yes or No, and please explain why? What do we mean by "For the investment projects of this risk"? Please explain. Question 3: You borrowed $50,000 educational loan from a bank to pay for your MBA degree, and the bank changes vou interest at 8% APR compounded monthly o hp)