If you buy a stock for $65 and sell it for $70 one year later, what yearly interest rate did you earn? Please use two decimals rounded up. You buy a stock for $30, which you expect to grow at a rate of 7% each year. How long will it be before the stock is worth $60? Please use two decimals rounded up. If you can earn 10% annual interest, how long does it take for your investment to double? Please use two decimals rounded up. How much will an ordinary annuity be worth in 3 years, if it pays $100 per year and earns 10% annual interest? Please use two decimals rounded up. You decide that, starting when you are 20 years old, you will save $5 a day for retirement At the end of the year, you invest the accumulated savings ($1,825) in a brokerage account with an expected annual return of 8%. If you continue the practice every year until you are 65, how much money will you have? Please use two decimals rounded up. If you would like to have $120,000 in your child's college account in 18 years and you can earn 5% per year, how much must you invest each year? Please use two decimals rounded up. How much money do you need to save each year to be a millionaire by the time you are 65 if you can earn an interest rate of 8% and you start saving when you are 45 years old? Please use two decimals rounded up