
a.
To find: The initial number of infected students.
The initial number of infected students is 16.
Given:
The function
Calculation:
To find the initial number of infected students, put
Hence, the initial number of infected students is 16.
b.
To find: The time taken to reach 200 infected students.
About 14 days.
Given:
The function
Calculation:
Put
Hence, the number of infected students will reach 200 in about 14 days.
c.
To find: The time taken to close the school.
About 17 days.
Given:
The function
The school will close when 300 of the 800-student body are infected.
Calculation:
Put
Hence, the school will close in about 17 days.
Chapter 3 Solutions
EBK PRECALCULUS:GRAPHICAL,...-NASTA ED.
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