Assume that the state Department of Transportation is interested in determining the average monthly fuel consumption of commuters in a certain city. The DOT might sample a group of commuters and collect information on the number of miles driven per day, number of driving days per month, and the fuel economy of the cars. Develop a predictive model for calculating the amount of gasoline consumed, using the following symbols for the data.
G=gallons of fuel consumed per month
M=miles driven per day to and from work or school
d=number of driving days per month
f =fuel economy in miles per gallon.
Suppose that a commuter drives 24 miles back and forth to work 20 days each month and achieves a fuel economy of 30 mpg. How many gallons of gasoline are used?