May someone show me how you would get each solution and what formula you would input into the calculator? thank you and will thumbs up

To the closest year, how long will it take $200 to double if it is deposited and earns the following rates? [Notes: ( 1 ) If you are using a financial calculator, you round to 5 . If the answer is 5.73 years, round to 6.] Do not round intermediate calculations. Round your answers to the nearest a. 4% year(s) b. 13%. year(s) c. 21%. year(s) d. 100%. year(s)