If f(x) = 5x + 40, what is f(x) when x = –5? –9 –8 7 15

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

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?

Two lines parallel to the same plane are parallel to eachother