Allison, Buck, Chantal, and Doug compete in a 40-yard dash. How many ways can the 4 competitors finish in 1st, 2nd, 3rd, and 4th place?

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