David’s mom wants to calculate how much it will cost to drive from los angeles, ca, to san francisco, ca. gas costs $4.00 a gallon, and the gas mileage of their car is 38 miles/gallon. what additional information does david’s mom need to do this calculation?

We are given with the information about the cost of gasoline per gallon and the rate of which gallon is consumed in terms of miles per gallon.In order to calculate the total cost to drive, the needed information is the total miles mother has driven all throughout.