PLEASE HELPPP ME, really urgent

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

How do you determine whether a relationship represented as as graph is linear or nonlinear

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?