2. The QRS manufacturing company buys components from four vendors; their locations are given as (X, Y) coordinate pairs in the table below. X Y QRS 0 0 Vendor A 5 -1 Vendor B -4 2 Vendor C 3 4 Vendor D 6 5 a. (2pts) In the metropolitan model, what is the sum of distances between QRS and the vendors? b. (2pts) In the straight-line model, what is the sum of distances between QRS and the vendors? 3. Four stores (A, B, C, and D) operate in zones 1 and 2. The number of customers in each zone, their average annual spending, and their probability of visiting each store are given in the tables below. Visit % from: Zone 1 Zone 2 Customers Spending Store A 35% 10% Zone 1 800 $500 Store B 20% 25% Zone 2 1200 $450 Store C 25% 30% Store D 20% 35% a. (2pts) At store B, what is the total spending for customers from zone 2? b. (2pts) What is store C's total market share (including both zones 1 and 2)?