To pass a quiz, students need a score of at least 32 points out of a total of 40 points. At least
what percent do the students need to pass the quiz?
A. 32%
B.64%
b. 72%
5. 80%

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?