please show your work (do not do in excel please)...

You have an investment account that started with $1,000 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 investment account earns 14% per year from now on, what will the account's value be 10 years from now? You are thinking of purchasing a house. The house costs $300,000. You have $43,000 in cash that you can use as a down payment on the house, but you need to borrow the rest of the purchase price. The bank is offering a 30-year mortgage that requires annual payments and has an interest rate of 7% per year. What will be your annual payment if you sign this mortgage? The annual payment is $ (Round to the nearest dollar)