Solve for the unknown number of years in each of the following: (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) [From instructor. After watching the hint video, please also scroll down to read the alternative methods as well. Thank you! Years Present Value $ 620 870 19 000 22,100 Interest Rate 9 % 10 % 17% 15 % Future Value $ 1,619 2,071 328 714 480,952