On a rectangular piece of cardboard with perimeter 19

Question

inches, three parallel and equally spaced creases are made. The cardboard is then folded along the creases to make a rectangular box with open ends. Letting x
represent the distance (in inches) between the creases, Using a graphing calculator find the value of x
that maximizes the volume enclosed by this box. Then give the maximum volume. Round your responses to two decimal places.

Answer 1

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