Last question pls answer

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.

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122