The average consumer spends for cable is 200.7 in 2002, 221.7 in 2003, 266.5 in 2004. What is the yearly increase approximately per year? 6.4 is the answer..
Can you tell me the estimate of consumer spending on cable in 2006?
To have the better approximation of the increase we do :
(266.5-200,7)/(2004-2002)=32.9 is the answer
The estimate is 200,7+4*32,9 = 332,3
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