For a class project, students must select one topic from a list of 15 choices. They will also choose one presentation method: written report, oral presentation, or making a game. Use the Fundamental Counting Principle to determine how many different project combinations are possible.

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.