Find the directional derivative of the function at the given point in the direction of vector v. g(x, y, z) = (x + 2y + 3z)3/2, (5, 4, 4), v = 4j − k dug(5, 4, 4) =

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