After john worked at a job for 10 years, his salary doubled. if he started at $x, his salary after 10 years is $1/2x $x + 2 $x - 2 $2x

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

The sum of two numbers is 86, and their difference is 20. find the two numbers

Can someone me i’m confused. will give brainliest and a whole bunch of points