the production cost to make 10 shirts is modeled by the expression 1.8 y +5.5 where y represents the number of meters of fabric needed to make the shirts which expression represents the production cost for one shirt?

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 7,000 and she drives 21,000 miles more each year. marc's car has a current mileage of 20,000 and he drives 11,000 miles more each year. will the mileages for the two cars ever be equal? explain.