document.write( "Question 1153214: Item 9
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\n" ); document.write( "You travel 3 miles downstream in a kayak at a speed of r
\n" ); document.write( "miles per hour. You turn around and travel 4 miles upstream at a speed of 0.5r
\n" ); document.write( " miles per hour. Finally, you turn around and return to your original starting point at a speed of r+1
\n" ); document.write( " miles per hour.
\n" ); document.write( "Write a model in simplified form for the total time t
\n" ); document.write( " (in hours) of the trip.
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Algebra.Com's Answer #775401 by josgarithmetic(39630) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "              SPEED          TIME          DISTANCE\r\n" );
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document.write( "GO               r           3/r              3\r\n" );
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document.write( "BACK           0.5r          4/(0.5r)         4\r\n" );
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document.write( "GO AGAIN       r+1           1/(r+1)          1\r\n" );
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\n" ); document.write( "\n" ); document.write( "Total time in hours:
\n" ); document.write( " $\"3%2Fr%2B8%2Fr%2B1%2F%28r%2B1%29\"$ , which still could use simplification.\r
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\n" ); document.write( "\n" ); document.write( " $\"11%2Fr%2B1%2F%28r%2B1%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%2811%28r%2B1%29%2Br%29%2F%28r%5E2%2Br%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%2812r%2B11%29%2F%28r%5E2%2Br%29\"$ \n" ); document.write( "

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