Do what it says on the picture

Find the sum of the following series. round to the nearest hundredth if necessary.

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths