Some bank robbers leave town, speeding at 71 mph. twelve minutes later, the police give chase, traveling at 80 mph. how long, after the robbery will it take the police to overtake the robbers.

Simplify this expression. 8x 16(x + y)

How can i differentiate this equation?

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your