Pls pls help really need an explanation so don't answer if u don't explain

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Can someone me immediately, this is due by midnight! if you can't see the question, i'll text it to you. show the steps you took to get your answer.

B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false