Help pls it’s the last question

Rationalize the denominator- 12x/√x-10

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

Aiko jumped rope for 20 min and stopped at 8: 05 when did she start