How to work out a percentage of a price

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.

Need same math paper but the back now i hope your able to read it cleary i need with hw

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.