Paul's mp3 player has a total of 852 songs. he has 4 different groups of songs. if he puts and equal number of songs in each group, how many songs will be in each group?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?