How effective is the math instruction?

According to the data set, where should the upper quartile line of the box plot be placed?

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get

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?