Part 1: you did not show how the last condition was met (you must calculate 10n and check if the population is your answer).

Part 3: give us the long decimal version of your answer when you calculate, then round your answer and report it as a decimal rounded to 4 decimal places and as a percentage rounded to two decimal places.

Part 5: give us the long decimal version of your answer when you calculate, then round your answer and report it as a decimal rounded to 4 decimal places and as a percentage rounded to two decimal places.

Part 7: Show your work, you should be splitting this up to be two different equations that you will solve, then give us the long decimal version of your answer when you calculate. After that, you would round your answer and report it as a decimal rounded to 4 decimal places and as a percentage rounded to two decimal places.