3. Val's Pizza is looking for a single central location to make pizza for delivery only. This college town is arranged on a grid with arterial streets, as shown in Figure 13.12. The main campus (A), located at 14th and R, is the source of 4,000 pizza orders per week. Three smaller campuses (B, C, and D) are located at 52nd and V, at 67th and Z, and at 70th and South. Orders from the smaller campuses average 1,000 pizzas per week. In addition, the State Patrol|headquarters (E) at 10th and A orders 500 pizzas per week. mile 1 mile 2 North boundary TD B co V St. AO O St. mile 1 G St. 1 mile E A St. 1 D 1st Ave. 14th Ave. 27th Ave. 40th Ave. South St. 56th Ave. 70th Ave. South boundary A FIGURE 13.12 Map of Campus Area a. At about what intersection should Val start look- ing for a suitable site? (Estimate coordinates for the major demands accurate to the nearest one-quarter mile, and then find the center of gravity.) b. What is the rectilinear weekly load-distance score for this location? c. If the delivery person can travel 1 mile in 2 minutes on arterial streets and 1/4 mile per minute on residen- tial streets, going from the center of gravity location to the farthest demand location will take how long