I'm not sure how to set this up and I also don't know the steps. if you know, can you show it?

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

I’m how many different ways can she give the four remaining flowers to the rest of the teachers in the afternoon

Can someone me with these questions? ?