An epidemic was spreading such that I weeks after its outbreak the rate of infection was N₁ (t) 0.18 0.8t + 150, 0sts 50 people per week. Twenty-five weeks after the outbreak, a vaccine was developed and administered to the public. At that point, the rate of infection of people per week was governed by the model N₂(t)=-0.2²5.7t + 215. Approximate the number of people that the vaccine prevented from becoming ill during the epidemic. (Round your answer to the nearest integer) people Need Help? Road I Watch Master

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