Refer to the data on water rates at https://www.tucsonaz.gov/water/residential-rates-and-monthly-charges for this question.

a) Use the table of Usage Charges for a single-family residential customer (second table on the website) and the Monthly Service Charge for a 5/8 inch meter (third table on the website) to create a piecewise-defined function for the total charge as a function of the number of Ccfs used, for up to 15 CFCs.  (You can ignore the Other Charges.) Make sure to define your variables and use proper mathematical notation.

b) Graph this function. Make sure to use an appropriate window, label your axes and scale, and label any important points.

c) What would be the total charge for using 10 Ccfs of water?

    

Transcribed Image Text:

Single-Family Class Per 100 cubic feet (Ccf) (1 Ccf = 748 Gallons) Usage (Ccf) Average Monthly Bill $16.33 5 $30.68 8 (overall average) $41.04 9. $45.66 10 $50.28 16 $82.57 31 $224.96 45 $417.18 60 $623.13 Single-Family Class Per 100 cubic feet (Ccf) (1 Ccf = 748 Gallons) Usage (Ccf) Average Monthly Bill $16.33 5 $30.68 8 (overall average) $41.04 9. $45.66 10 $50.28 16 $82.57 31 $224.96 45 $417.18 60 $623.13