Total distance traveled in 20 gallons of gasoline = 580 miles
Total distance traveled in 1 gallon of gasoline =

= 29 miles
Now, we have to calculate the number of miles Maralah can drive in 2,3,4,5,6,7,8,9 ans 10 gallons of gasoline.
Since, number of miles traveled in 1 gallon of gasoline = 29 miles
Number of miles traveled in 2 gallons of gasoline =
= 58 miles.
In the similar way, we will make a table which shows the number of miles she can drive her car for 1,2...10 gallons of gasoline.
Refer to the table in attached image.