Half of the students in max's class volunteer at the local community center. fifteen students do not volunteer. if there are 12 boys in max's class, how many girls are in the class?

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out