document.write( "Question 188301: 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 #141150 by Mathtut(3670) $\"\"$ $\"About$

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so P=176.....plug in and solve for t
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\n" ); document.write( " $\"176=200%2B5t%2Bt%5E2\"$
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\n" ); document.write( " $\"t%5E2-5t-24=0\"$
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\n" ); document.write( " $\"%28t-8%29%28t%2B3%29=0\"$
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\n" ); document.write( "t=8 and -3
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\n" ); document.write( "since we cant have a negative time
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\n" ); document.write( "t=8 days \n" ); document.write( "

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