document.write( "Question 1135231: The population (in millions) of a certain country t years after 1900 is given by the function p(t). There were 450 million in 1900. If p′(t)=4 throughout the time span 1900 to 1910, what was the population of the country in 1907? (Hint: What was the practical signifigance of p′(t)=4).
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Algebra.Com's Answer #752835 by josmiceli(19441) $\"\"$ $\"About$

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$\"+p%28t%29+=+4t+%2B+c+\"$ ( integral of p'(t) )
\n" ); document.write( "At $\"+t=0+\"$ and $\"+p+=+450+\"$ :
\n" ); document.write( " $\"+450+=+4%2A0+%2B+c+\"$
\n" ); document.write( " $\"+c+=+450+\"$
\n" ); document.write( "------------------------
\n" ); document.write( " $\"+p%28t%29+=+4t+%2B+450+\"$
\n" ); document.write( "For 1907, $\"+t=7+\"$
\n" ); document.write( " $\"+p%287%29+=+4%2A7+%2B+450+\"$
\n" ); document.write( " $\"+p%287%29+=+478+\"$
\n" ); document.write( "478 million in 1907
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