Factor by grouping.13y6 - y5 - 13y + 1
A. (y5 - 1)(13y - 1)
B. (y5 - 1)(13y + 1)
C. (y5 + 1)(13y - 1)
D. (y5 + 1)(13y + 1)
Answer: A
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Use your calculator to perform each calculation and observe the answers. Use inductive reasoning to determine which statement is true. 
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What is true about expressions containing products of nonzero numbers in both the numerator and denominator?
A. If the total number of negative numbers in the expression is odd, the result is positive. B. If the total number of negative numbers in the expression is odd, the result.is smaller than -1. C. If the total number of negative numbers in the expression is odd, the result can be either negative or positive. D. If the total number of negative numbers in the expression is odd, the result is negative.
Solve the system by the substitution or the addition method.
A. (4, -4) B. (12, -5) C. (4, 4) D. (12, 3)
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. ?
Divide as indicated. Write the quotient in standard form.
A. - 
i
B. 
i
C. 
D. - 