<PRE><B>Question 916908</B>
decreased to $0.54 per mile in 2009. 
a) find a linear equation that relates the average cost C of operating a standard-sized car and the number X of miles it is driven.
C(x) = 0.54x
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 b)what is the annual cost if you drive 15,000 miles?
C(15000) = 0.54*15000 = $8,100
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Cheers,
Stan H.
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