10 ft ladder rests against a vertical wall. If the bottom of the ladder is pushed towards the wall at a rate of 1 ft /s, how st is the top of the ladder moving up the wall when the bottom of the ladder is 7 ft from the wall? all Floor answer can be written in simplest rationalized form as AVB C it /s . d your answer as ABC, with no spaces, commas, or radical signs. 3 10 ample, an answer of 4 would be recorded as 3104