document.write( "Question 992181: a woman drives for a total of 10 hours. She drives for t hours at a rate of 45 mph and the remaining time at a rate of 55 mph. Express the total distance covered, d, as a function of t. (d=rt) \n" ); document.write( "

Algebra.Com's Answer #611799 by vleith(2983) $\"\"$ $\"About$

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She travels at 45 for t hours. That means she travels (10-t) hours at 55.\r
\n" ); document.write( "\n" ); document.write( "so
\n" ); document.write( " $\"Distance+=+DistanceAt45+%2B+DistanceAt55\"$
\n" ); document.write( " $\"Distance+=+45%2At++%2B+55%2A%2810-t%29\"$
\n" ); document.write( " $\"Distance+=+45t+%2B+550+-+55t\"$
\n" ); document.write( " $\"Distance+=+550+-+10t\"$ \n" ); document.write( "

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