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Which one is true about the hexagons ?

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.

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