To find the equation for the distance d that a car can travel based on the number of gallons g of gasoline it uses, we first need to determine the car’s rate of miles per gallon.
The car travels 140 miles on 5 gallons of gasoline. We can calculate the miles per gallon (mpg) by dividing the total miles by the total gallons:
mpg = Total Miles / Total Gallons = 140 miles / 5 gallons = 28 miles/gallon
This means the car travels 28 miles for every gallon of gas used. Now, to express the relationship mathematically, we can use the following equation:
d = 28g
In this equation, d is the distance in miles that the car can travel, and g represents the number of gallons of gasoline used. By multiplying the number of gallons by 28, we can find the total distance the car can cover with that amount of gas.