What is a resonable estimate for 5,897 ?

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.

What is always true when two whole numbers are subtracted?

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume