Aconjecture and a portion of the flowchart proof used to prove a conjecture are shown which equation best represents the information that should be in the box labeled 1
the options are
4a=10
4a+4=20
2a=20
2a+4=20

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