Jack opens a bank account with $80 and decides to deposit $25 each month into the account. which equation can be used to find the number of months after which jack will have $405 in his account?

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