Using the output given above, which cells would be set as changing variable cells in Solver?

Question

BlackTom AI · Accepted Answer

The question asks which cells would be set as changing variable cells in Solver, given the output shown above. 
Option 1: B3:C3. These cells appear to be in row 3, which contains the 'Minimize' row values and the boundary conditions for the constraints. In typical Solver setups, changing variable cells are the decision variables that Solver adjusts to optimize the objective, not the constant results or constraint rows themselves. Therefore, B3:C3 are unlikely to be designated as changing variables. 
Option 2: D4:D6. This range covers cells in column D over rows 4 to 6, which in the table contain the signs for the constraints (≤, ≥, ≤). These are constraint operators, not adjustable decision variables, so D4:D6 would not be set as changing variable cells. 
Option 3: F4:F6. These cells are in column F and hold numeric RHS values (28, 6, 10) corresponding to the right-hand sides of the constraints. Similar to D4:D6, these RHS values are typically constants in a Solver model, unless you explicitly define them as changing cells. In the common setup, RHS targets are not the changing variables. 
Option 4: B2:C2. This range represents the decision variable cells X1 and X2 in the problem, i.e., the unknowns the solver is asked to optimize. In most optimization problems, these are precisely the changing variable cells, as Solver will adjust X1 and X2 to minimize the objective function while satisfying the constraints. 
Putting it together, the only set of cells that aligns with the role of changing variable cells (the decision variables to be altered by Solver) is B2:C2, since they directly correspond to the variables being solved for. The other options point to results, constraint operators, or RHS values, which are not what Solver changes to achieve the optimum.

Using the output given above, which cells would be set as changing variable cells in Solver?Single choice

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