Question: Please help with this question Postal regulations specify that the combined length and girth of a parcel sent by parcel post may not exceed 130

Please help with this question

Postal regulations specify that the combined length and girth of a parcel sent by parcel post may not exceed 130 in. Find the dimensions of the rectangular package that would have the greatest possible volume under these regulations. Hint: Let the dimensions of the box be x in. by y in. by z in. (see the figure below). Then 2x + 2z + y = 130, and the volume V = xyz. Show that V = f(x, z) = 130xz - 2x2z - 2xz2. y X Maximize f(x, z). X = in in 7 in Submit

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