can you please solve this problem from the optimization modeling with spreadsheets book. thanks Hint/Note: In this problem you may wonder “How am I supposed to make anything if I cannot import machines/steel/trucks?” Well, think of this as a planning (strategic) model as against an operational model. If you are still unconvinced, you can assume (in your mind only; no need for actual numbers!) that a minimal amount of resident machines/steel/trucks from last year was used to begin production and then of course it becomes self-sustaining. Those of you who recall some microeconomics may think of this situation as similar to classic economic equilibrium.