lilinicholeb
09.02.2021 •
Mathematics
Hannah's electricity company charges her a flat rate and then a certain amount per kilowatt hour.
Use the table to help you answer the following questions.
Hannah's Electric Bill
Kilowatt hrs 20 25 30 35 40 45 50
Electric bill
$17.20 $17.75 $18.30 $18.85 $19.40 $19.95 $20.50
1. This data can be modeled with a
exponential
regression equation.
2. Choose the appropriate regression equation.
y=15.34(1.01)^x
3. If Hannah's bill is $21.60, how many kilowatt hours did she use?
4. If Hannah uses 73 KwH, how much will her bill be?
5. If her bill is $67.80, how many kilowatt hours did she use?
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