Pls! you!
1) in the morning, the temperature was -4.6 f. by the afternoon, the temperature was -9.4 f. what was the change in temperature
2) ron made withdrawals of $46.79 and $18.93 from his checking account. he also deposited $30. if his balance before these transactions was $71.24, what is his balance now?
explanation pls!

What is the value of y? round to the nearest tenth

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer