Correct answer plz. 15 points. Reported for wrong answer. Thx

Find the value of x. round the length to the nearest tenth

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?