Use your work from the investigation to answer these questions.
a. What x-value maximizes the volume for your box? What is the maximum volume possible?
b. What x-value or values give a volume of 300 cubic units?
c. The portion of the graph with domain x > 10 shows positive volume. What does this mean in the context of the problem?
d. Explain the meaning of the parts of the graph showing negative volume.