document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1132990>Question 1132990</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 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 <BR>\n" );
document.write( "P = −t^2 + 13t + 120, where 1 ≤ t ≤ 6.  Find the day that 160 students had the flu. Recall that the restriction on t is at most 6. </SPAN>\n" );
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document.write( "We need to find the value of t that is less than or equal to 6 for which<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-t%5E2%2B13t%2B120+=+160 ALIGN=MIDDLE  ALT=\"-t%5E2%2B13t%2B120+=+160\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Solve the equation by factoring; one of the solutions will satisfy the condition that it is less than 6; the other will not. </SPAN>\n" );
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