The coach of a soccer team is holding tryouts and can only take 3 more players. there are 6 players trying out. how many different groups of 3 players could possibly be chosen?

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