Use properties to rewrite the expression to be easier to solve explain (13+4.63)+7.4

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

Which system of linear inequalities is represented by the graph?

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?