On number 4, how do you figure out if it's an enlargement or a reduction?

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.

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.