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A ladder 25 ft. long is leaning against a house.

A ladder 25 ft. long is leaning against a house. At time t=0, the base of the ladder is 7 feet from the wall, and the base of the ladder starts to move away from the wall at a constant rate of 2 feet per second.

a) How far is the top of the ladder from the ground at t=0
b) How far is the base of the ladder from the wall and how far is the top of the ladder from the ground at t=4?
c) At t=8.5 secons, how far is the base of the ladder from the wall and how far is the top of the ladder from the ground?

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