-500 < or equivalent to 11 - 60

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.

The anwser cause i do not understand just plez

Let x = a + bi and y = c + di and z = f + gi. which statements are true?