document.write( "Question 344533: Car A passes point O heading east at a constant rate of 20 mi/h; car B passes the same point 1 hour later heading north at a constant rate of 50 mi/h. Express the distance between the cars as a function of time t, where t is measured starting when car B passes point O. \n" ); document.write( "

Algebra.Com's Answer #246495 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Rate*Time=Distance
\n" ); document.write( " $\"R%2At=D\"$
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\n" ); document.write( "During the $\"1\"$ hour difference, Car A moved $\"20\"$ miles away from point O.
\n" ); document.write( "Car A's distance from point O would be,
\n" ); document.write( " $\"D%5Ba%5D=20t%2B20\"$
\n" ); document.write( "Car B's distance would be,
\n" ); document.write( " $\"D%5Bb%5D=50t\"$
\n" ); document.write( "The distance between them, $\"D\"$ , would be
\n" ); document.write( " $\"D=D%5Ba%5D-D%5Bb%5D\"$
\n" ); document.write( " $\"D=20t%2B20-50t\"$
\n" ); document.write( " $\"highlight%28D=-30t%2B20%29\"$ \n" ); document.write( "

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