Iwas absent during this lesson and now i'm completely at a loss. how do i do this?

The system of equations graphed below has how many solutions? y = 2x + 2

The measure of an angle is 117°. what is the measure of a supplementary angle?

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?