Which equation represents “add 39 and a number and then multiply by 3”?

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?

27 is what percent of 108? 27 is % of 108

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)