A rich aunt has promised you $6,000 one year from today. In addition, each year after that, she has promised you a payment on the anniversary of the last payment) that is 1% larger than the last payment. She will continue to show this generosity for 20 years, giving a total of 20 payments. If the interest rate is 7%, what is hor promise worth today? The present value of the aunt's promise is $(Round to the nearest dollar) You have an investment account that started with $2,000 10 years ago and which now has grown to $12,000 a. What annual rate of return have you earned (you have made no additional contributions to the account)? b. If the savings bond earns 16% per year from now on, what will the account's value be 10 years from now? a. What annual rate of return have you earned (you have made no additional contributions to the account? Your annual rate of return is %, (Round to two decimal places.) You have an investment opportunity that requires an initial investment of $2,800 today and will pay $5.200 in one year What is the rate of return of this opportunity? The rate of return for this opportunity is 14. (Round to two decimal places.)