HELP ASAP PLEASE BRAINLIEST AND 30 POINTS

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Answer for 10 points show work you guys in advanced < 3

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220