Spread of a Disease The spread of a highly contagious virus in a high school can be described by thelogistic functiony = 5000/1 + 999e-0.8xwhere x is the number of days after the virus isidentified in the school and y is the total number ofpeople who are infected by the virus.a. Graph the function for 0 <= x <= 15.b. How many students had the virus when it was firstdiscovered?c. What is the upper limit of the number infected bythe virus during this period?

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