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.
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If the cost of running the cable on land is $2.00/running foot and the cost of running the cable under water is $5.20/running foot, locate the point P that will result in a minimum cost (solve for x).
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A. 
B. 
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Calculate the area of the surface S.S is the lower portion of the sphere x2 + y2 + z2 = 36 cut by the cone z = 
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A. 72
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B. 36
C. 36
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D. 12
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Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(x5y-1)3
A. 
B. x15y3
C. 
D. 
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Divide.- 
A. -5 B. 4 C. -3 D. -4
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Insert <, >, or = between the pair of numbers to form a true statement.0.0327 _____ 327,000
A. = B. < C. >
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