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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 1.65.

If the monthly bill for 21 HCF is 27.51 what is the monthly bill for 26 HCF?

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Solution Summary

The solution calculates the monthly water bill and the amount of water used.

Solution Preview

B: monthly bill in dollars
c: water used in HCF
because B is a linear function of c, we can write it as
B = mc + b, where m is the slope of line when ...

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