Let's solve the following problem: A ladder a ft long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of b ft/s, how fast is the top of the ladder sliding down the wall when the bottom of the ladder is c it from the wall? A mathematician interprets this situation using symbols and writes the following. = b de 1 =a dh de z c =? By analyzing this writing, answer the questions below. What does t stand for? Othe distance between the wall and the bottom of the ladder Otime in minutes Otime in seconds Othe distance between the wall and the top of the ladder Othe distance between the floor and the top of the ladder What does r stand for? the distance between the wall and the top of the ladder the distance between the floor and the top of the ladder Othe distance between the wall and the bottom of the ladder Otime in seconds Otime in minutes