Multiple Choice
A rectangular box with a square base is to be formed from a square piece of metal with 30-inch sides. If a square piece with side x is cut from each corner of the metal and the sides are folded up to form an open box, the volume of the box is . What value of x will maximize the volume of the box?
A)
B)
C)
D)
E)
Correct Answer:

Verified
Correct Answer:
Verified
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