(3 points) An epidemic is spreading through a town of 48000 people. It is found that if x and y denote the numbers of people sick and well in a given week, respectively, and if s and w denote the corresponding numbers for the following week, then 1+1 _x _ 4 5y II a ZHE\" II E (a) Write this system of equations in matrix form, (Do this on paper.) x (b) Solve the resulting matrix equation forX = [ ] Ji (c) Suppose that 9650 people are sick in a given week. How many were sick the preceding week? (d) Same question as part (c), except assume that 9660 are sick