One Model for the Spread of an Epidemic Is That $2000$

question 44

Multiple Choice

One model for the spread of an epidemic is that the rate of spread is jointly proportional to the number of infected people and the number of uninfected people. In an isolated town of $2000$ inhabitants, $110$ people have a disease at the beginning of the week and $1100$ have it at the end of the week. How long does it take for $70 \%$ of the population to be infected?

• A) \(30 \text { days }\)
• B) \(20 \text { days }\)
• C) \(0 \text { days }\)
• D) \(10 \text { days }\)
• E) \(15 \text { days }\)

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Definitions:

Mental Picture

A visual representation formed in the mind, which can be recalled or imagined without the physical presence of the object.

Object

In general usage, any material thing that can be seen and touched. In psychological contexts, an object can refer to a target of attention or affection.

Piaget

Jean Piaget was a Swiss psychologist known for his pioneering work in the study of child development and his theory of cognitive development that explains how children construct a mental model of the world.

Circular Reactions

Repetitive actions in early childhood development that allow infants to explore and learn about their environment.