Assignment:
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?
Provide complete and step by step solution for the question and show calculations and use formulas.