please help explain 2 & 3 thank you

A service area network comprises of seven rural communities as shown in Figure 1 below, A bank is planning to set up ATMs in this service area and a fire department is also planning to serve the seven communities in this service area. Figure 1: Service Area Network with Travel Time Between Communities (in Minutes) Use Microsoft Word to answer all the questions below. Show all your calculations. Please upload one single Word document on Blackboard by the due date. Word solution file 2. The volunteer fire department has just purchased two used fire engines auctioned off by a nearby city. What are all the possible pairs of communities in which the fire engines could be located to ensure that all communities can be reached in 30 minutes or less? Show all your calculations. ( 6 points) 3. What additional consideration should be used to make the final site selection from the community pairs found in Question 2 above? ( 2 points) A service area network comprises of seven rural communities as shown in Figure 1 below, A bank is planning to set up ATMs in this service area and a fire department is also planning to serve the seven communities in this service area. Figure 1: Service Area Network with Travel Time Between Communities (in Minutes) Use Microsoft Word to answer all the questions below. Show all your calculations. Please upload one single Word document on Blackboard by the due date. Word solution file 2. The volunteer fire department has just purchased two used fire engines auctioned off by a nearby city. What are all the possible pairs of communities in which the fire engines could be located to ensure that all communities can be reached in 30 minutes or less? Show all your calculations. ( 6 points) 3. What additional consideration should be used to make the final site selection from the community pairs found in Question 2 above? ( 2 points)