Is 105/2 equivalent to 210/4

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

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?

Use long division to indentify (12xto the second power+15x-8)divided by 3x