)
april had
3
7
of a pound of pecans. her sister ate
2
3
of april's pecans. how many pounds of pecans did april's sister eat?

The volume of a spherical hot air balloon v(r) = 4 3 ? r3 changes as its radius changes. the radius is a function of time given by r(t) = 3t. find the instantaneous rate of change of the volume with respect to t at t = 2.