I need help understanding this as I a completely lost! thank you!

A temporary-help agency wants to open an office in a suburban section of a large city. It has identified five large corporate offices as potential customers. The locations of these offices in miles on an xy coordinate grid for the area are c1=(4,4),c2=(4,11),c3=(7,2),c4=(11,11), and c5=(14,7). The expected demand for temporary help from these customers is weighted as w1=3,w2=2,w3=2,w4=4, and w5=1. The agency reimburses employees for travel expenses incurred by their assignments; therefore, recommend a location (i.e., xy coordinates) for the agency that will minimize the total weighted metropolitan distance for job-related travel. Use your results for homework problem 8.2 to answer the following questions. Question 3 (3 points) What is the median? Your Answer: Answer Question 4 (3 points) The optimal point lies on which of the following line segments? (7,7)(7,11)(7,0)(7,7)(0,11)(7,11)(0,7)(7,7)