On a college campus of 5000 students, one student returns from a vacation
with a contagious and long lasting flu virus. The spread of the virus is
modeled by:
Y =
5000
1+4999(2.7)
(−0.8)
: ≥ 0
a. After 5 days how many students are infected?
b. Classes are cancelled when the number infected is 40% or more.
How many days will it take for this number to be reached?
(You may use (2.7)
4
= 53.14 , log10 2.7 = 0.5145 , log10 1.5 = 0.1761 &
log10 4999 = 3.5228 )
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