document.write( "Question 167560: The number of people infected after t days is P = 200 + 5t - t2. Find the number of days until the number of people infected is 176. \n" ); document.write( "
Algebra.Com's Answer #123460 by sowmya(32)\"\" \"About 
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The number of people infected after t days is P = 200 + 5t - t2. Find the number of days until the number of people infected is 176. \r
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\n" ); document.write( "\n" ); document.write( "Let the number of people infected afetr t days be P\r
\n" ); document.write( "\n" ); document.write( "P = 200 + 5t - t^2\r
\n" ); document.write( "\n" ); document.write( "we haev to find t when P = 176\r
\n" ); document.write( "\n" ); document.write( "we have to solve for t
\n" ); document.write( "200+ 5t - t^2 = 176
\n" ); document.write( "t^2-5t-24=0
\n" ); document.write( "t^2-8t+3t-24=0
\n" ); document.write( "(t-3)(t-8)=0
\n" ); document.write( "Hence t=3 or t=8
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