document.write( "Question 1142786: Rogers brother gave Roger his collection of coins when he left for college. At that time, the value of his collection was $720. Twelve years later, the collection was worth $1080. What is the rate of change? Don’t forget your units. \n" ); document.write( "
Algebra.Com's Answer #763523 by ikleyn(52781)\"\" \"About 
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document.write( "In such context, there are 2 (two, TWO) different rates of change  (two differently defined measures).\r\n" );
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document.write( "One rate of change is LINEAR.\r\n" );
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document.write( "The other rate of change is EXPONENTIAL.\r\n" );
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document.write( "Which rate of change do you request ?\r\n" );
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