Using the segment addition postulate, which is true?

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

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.

What is another way to express 36 +32