Please help to explain (step-by_step) how to formulate a goal programming model to determine the number of each type of project to undertake to satisfy the goals.

Texmart is a locally owned "big-box" retail store chain in Texas with 75 stores, primarily locatec in the Dallas-Fort Worth area. In order to compete with national big-box store chains, Texmar is planning to undertake several "sustainability" (i.e., "green") projects at its stores. These national chains have been heavily publicizing their sustainability efforts, including the reduction of greenhouse gas (GHG) emissions, which has had a positive effect on their sales. They have also demonstrated that sustainability projects can have a positive impact on cost (especiall) energy) savings. The projects Texmart is considering include installing solar panels at some o all of its stores, installing small wind turbines, replacing some or all of its 165 trucks with more fuel-efficient hybrid trucks, and implementing waste reduction programs at its stores, including recycling and reducing the use of plastic bags in stores. The costs for these projects (per store or truck), the resulting reduction in GHG emissions (per store or truck), the annual cost saving: (per store or truck), and the energy savings (per store or truck) are shown in the following table: Texmart has established the importance weighted four goals