<PRE><B>Question 343781</B>
Mobile phone subscribers in millions between 1995 and 2006 can be modeled by 
S(x)=18.12x+20.19, when x is the number of yrs after 1995, what yr was it 291,990,000 ?Rounding to nearest year
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18.12x+20.19 = 291,990,000
?Are the 18.12 and the 20.19 in millions?
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Cheers,
Stan H.

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