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3. [6 marks] Suppose, at time t = 0, an individual with an infectious disease enters a. population of three hundred individuals who are susceptible to the disease. A model for the spread of the disease can be given by: , _ 600 t (x) _ 2,-(300 1:) where t (in hours) is the time at which :1: number of individuals are infected with the disease. 150 (8.) Evaluate / t'(a:)d:t to 1 decimal place. Interpret your result in the context of the problem. 1