Question 15 1 pts
15. A rectangular piece of cardboard measuring 20 inches by 30 inches is to be made into a box
with an open top by cutting equal size squares from each corner and folding up the sides. Let x represent the
length of a side of each such square. For what x-value will the volume be a maximum?
A. 3.924 in
B. 7.847 in
C. 1,056.31 in
D. 2, 112.61 ir
Yes