Think about the exercise we discussed in class and please finish the following problem. You need to show the spreadsheet model, solver solution, the quickest route from Seattle to Denver $($which cities are passed by$),$ as well as the total time needed.

Sarah and Jennifer have just graduated from college at the University of Washington in Seattle and want to go on a road trip. They have always wanted to see the mile$-$high city of Denver. Their road atlas shows the driving time $($in hours$)$ between various city pairs, as shown below. Formulate and solve a network optimization model to find the quickest route from Seattle to Denver.