How to work out Pythagoras Theoram​

Which statement accurately explains whether a reflection over the y axis and a 270° counterclockwise rotation would map figure acb onto itself?

Joyce deposited $5000 in an account with an annual interest rate of 6%, compounded annually. how much money will be in the account 10 years later

If jobs arrive every 15 seconds on average, what is the probability of waiting more than 30 seconds?