At the start of the month, the value of an investment was $53.92. By the end of the month, the value of the investment changed by a loss of $17.40.
What was the value, in dollars, of the investment at the end of the month?

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.