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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.

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x