Solve these recurrence relations together with the initial conditions given. an = an−1 + 6an−2 for n ≥ 2, a0 = 3, a1 = 6

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