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Solve for the unknown interest rate in each of the following: Note: Do not round intermediate calculations and enter your answers as a percent ro Solve for the unknown number of years in each of the following: Note: Do not round intermediate calculations and round your answers to 2 decimal ple Assume the total cost of a college education will be $365,000 when your child enters college in 18 years. You presently have 559.000 to invest. What annual rate of interest must you eam on your investment to cover the cost of your child's college education? Note: Do not round intermediate celculations and enter your onswer as a percent rounded to 2 decimal places, e.9., 3216. Problem 4-7 Calculating the Number of Periods [LO 4] At 6.75 percent interest, how long does it take to double your money? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16. At 6.75 percent interest, how long does it take to quadruple your money? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16 . Problem 4-9 Calculating the Number of Periods [LO 4] You're trying to save to buy a new $215,000 Ferrari. You have $36,000 today that can be invested at your bank. The bank pays 4.3 percent annual interest on its accounts. How long will it be before you have enough to buy the car? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16 . You have just received notification that you have won the $2.07 million first prize in the Centennial Lottery. However, the prize will awarded on your 100 th birthday (assuming you're around to collect). 73 years from now. What is the present value of your windfall the appropriate discount rate is 11 percent? Note: Do not round intermediate calculations and enter your answer in dollars, not millions of dollars, rounded to 2 decimal places, e.g.. 1,234,567.89. Problem 4-12 Calculating Future Values [LO 1] Your coin collection contains 801952 silver dollars if your grandparents purchased them for their face value when they were new. how much will your collection be worth when you retire in 2048 . assuming they appreciate at an annual rate of 5.2 percent? Note: Do not round intermediate calculotions and round your onswer to 2 decimal places, e.g., 32.16