H=4t+4 the variable t represent the number of years haley sense her last haircut the variable h represents the hair length in centimeters. How many years will it take until haley's hair is 36 centimeters long?

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