Solve for y.
-1 = 8+3y
Simplify you answer as much as possible.

If a • b*2 = 1.8 x 10*-7, and c•b/d = 7.2 x 10*-4, find the value of a•d*2/c*2

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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?