Rë gjendet vlera e shprehjes:
.) a=2x² – 3x³ + x² – 3x + 2x - x +5
për x=-1;

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