<PRE><B>Question 153841</B>
In 1998, 1.7 million electronic bill statements were delivered and payments occured. In 2002, that number rose to 9.9 million.
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a) write two ordered pairs of the form (years after 1998, millions of electronic bills).
(0,1.7 mil); (4,9.9 mil)
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b) the relationship between years after 1998 and 2002 is approximately linear over this period. Use the ordered pairs from part a to write an equation of the line relating to electronic bills.
slope = (9.9-1.7)/(4-0) = 8.2/4 = 2.05
intercept: (0,1.7 mil)
EQUATION:
# of bills = 2.05*years since 1998 + 1.7 million electric statements
b = 2.05x + 1.7
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c) Use the linear equation from part (b) to estimate the lectronic bills to be delivered and pain in 2006. 
b(2) = 2.05*8 + 1.7
b(2) = 18.1 million
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Cheers,
Stan H.

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