Find the minimum and maximum values of z=7x+8y, if possible, for the following set of constraints. 4x+6y z 24 x+6y ≥ 12 x20, y 20 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The minimum value is. (Round to the nearest tenth as needed.) OB. There is no minimum value.

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