I don't know what I'm doing wrong

Steven recently won $1 in the scratch-n-play lotto. His banker, Marianne, promises to pay him 1% per month if he will invest his money in her bank for 9.5 years. Part A: How much interest will Steven have earned after one year? Note that there are 12 compounding periods in one year. Write your answer as a percent rounded to two decimals, but don't include the percent sign (i.e. 0.1234321 should be written as 12.34) 10% Part B: How much money will Steven have in the bank after 9.5 years? Round your answer to two decimals but don't include the dollar sign. $1.10 Part C: Given that Steven earns 1% per month, how many years (not months) would Steven have to wait until he had $600 in the bank account? Round your answer to two decimals. 639.96 years