document.write( "Question 1124526: An epidemiological study of the spread of a certain influenza strain that hit a small school population found that the total number of students, P, who contracted the flu t days after it broke out is given by the model
\n" ); document.write( "P = −t^2 + 17t + 180, where 1 ≤ t ≤ 6.
\n" ); document.write( "Find the day that 240 students had the flu. Recall that the restriction on t is at most 6.
\n" ); document.write( "t = \n" ); document.write( "

Algebra.Com's Answer #740896 by Boreal(15235) $\"\"$ $\"About$

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240=-t^2+17t+180
\n" ); document.write( "so t^2-17t+60=0
\n" ); document.write( "(t-12)(t-5)=0
\n" ); document.write( "t=5 days, since 12 days is not allowed.
\n" ); document.write( " $\"graph%28300%2C300%2C-5%2C10%2C-20%2C280%2C-x%5E2%2B17x%2B180%29\"$ \n" ); document.write( "

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