Factor completely.3x2 - 9xy - 12y2 = 3( 
)( 
)
A. x - y, x + 4y
B. x - 3y, x + 4y
C. x + 3y, x - 4y
D. x + y, x - 4y
Answer: D
Mathematics
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A. 6x + 3y - 3z = 0 B. -5x - 3y - 7z = 0 C. -6x - 3y + 3z = 60 D. 5x + 3y + 7z = 0
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Solve the problem.Find the least squares line through the points 
and 
A. y = -27x + 68 B. y = 15x + 84 C. y = -27x + 84 D. y = 15x + 68
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Solve the problem.The string on a balloon is 13 mm long. What is this length measured in cm?
A. 1300 cm B. 0.1 cm C. 1.3 cm D. 130 cm
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Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.log8
A. log8
+ log87
B. log87 - log8
C. log4
- log47
D. 
log813 - log87
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