Helen had $330 in her savings account when Vince opened a savings account with zero dollars. • Helen deposited $30 into her account each week for x weeks.
• Vince deposited $50 into his account each week for x weeks.
• The accounts did not earn interest.
Which inequality represents this situation when the amount of money in Helen's account was greater than the amount of mone
account?
30x < 330 + 50x

50x> 330 + 30x

30x> 330 + 50x
50x < 330 + 30x

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

On a piece of paper graph f(x)=5•(0.4)^x

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −