My son is having such a hard time with 6th grade math. and i'm no at all. someone

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

Which inequality has a dashed boundary line when graphed ?

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