document.write( "Question 934403: A cars speed is given by v-t^2+2t+20 where 0\n" ); document.write( "where t is hours and v is miles/hour.
\n" ); document.write( "A) How far does the car travel in 5 hours?
\n" ); document.write( "B) What is the average speed of the car?
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Algebra.Com's Answer #567454 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
A) Integrate,
\n" ); document.write( "\"s=int%28v%2Cdt%29\"
\n" ); document.write( "\"s=int%28%28t%5E2%2B2t%2B20%29%2Cdt%2Ct=0%2C5%29\"
\n" ); document.write( "\"s=t%5E3%2F3%2Bt%5E2%2B20t%2BC\"
\n" ); document.write( "\"s=5%5E3%2F3%2B5%5E2%2B20%285%29\"
\n" ); document.write( "\"s=125%2F3%2B25%2B100\"
\n" ); document.write( "\"s=%284%2F3%29125\"
\n" ); document.write( "\"s=166.7\"\"miles\"
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\n" ); document.write( "B) \"V%5Bave%5D=166.7%2F5=33.3\"\"mph\"
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