A closed box is in the shape of a rectangular solid with dimensions x, y, and z. Suppose each dimension is changing at the rate of 0.5 in/min. When x = 1 in, y = 5 in, and z = 6 in.
A) The rate of change of the volume of the box is:
a) 1.5 in³/min
b) 2.5 in³/min
c) 3.0 in³/min
d) 4.0 in³/min