The volume V of a right circular cylinder of height 8 m and radius r m is V = V(r) = 8xr. Find the instantaneous rate of change of the volume with respect to the radius when r = 3 m. (Use symbolic notation and fractions where needed.) V' (3) = m' /mThe equation of the tangent line to the graph of a function f at (5, 2 ) is y(x) = >x + 2. What is f' (5)? (Use symbolic notation and fractions where needed.) f' ( 5 ) =