Please help :) me

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.

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?