In the Diagram, S Represents the Position of a Power

question 31

Multiple Choice

In the diagram, S represents the position of a power relay station located on a straight coast, and E shows the location of a marine biology experimental station on an island. A cable is to be laid connecting the relay station with the experimental station. If the cost of running the cable on land is $2.50/running foot and the cost of running the cable under water is $6.50/running foot, locate the point P that will result in a minimum cost (solve for x) .

• A) ft
• B) ft
• C) ft
• D) ft
• E) ft

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