Question 1063195: Suppose that a household's monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, HCF). When graphed, the function gives a line with a slope of
1.45
. See the figure below.
If the monthly cost for
16
HCF is
$44.19
, what is the monthly cost for
11
HCF?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Suppose that a household's monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, HCF). When graphed, the function gives a line with a slope of 1.45 . See the figure below.
If the monthly cost for 16 HCF is $44.19 , what is the monthly cost for 11 HCF?
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Form:: HCF = 1.45x + b
----
44.19 = 1.45*16 + b
b = 20.99
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Ans: HCF = 1.45(11) + 20.99
HCF = $36.94
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Cheers,
Stan H.
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