The expression equivalent to sin 3x + sin x is
The expression equivalent to sin 3x- sin x is

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?

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

Joanie watched 1 out of three of a movie in the morning