Which expression is equivalent to 7x^2 √2x^4 • 6 √2x^12 if x does not equal 0 A. 24x^22
B. 13x^12 √2
C. 84x^10
D. 42x^12 √2

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