Factor completely.x2 - 3xy - 18y2
A. (x - y)(x + 3y)
B. (x + 6y)(x - 3y)
C. (x - 6y)(x + y)
D. (x - 6y)(x + 3y)
Answer: D
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Provide an appropriate response.List the different lengths between pairs of nails on a 4-nail by 4-nail geoboard. The vertical and horizontal distance between any two adjacent nails is one unit. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
A. 1, 2, 3, 
, 
, 
, 
, 2
, 
, 3
B. 1, 2, 3, 5, 
, 
, 
, 2
, 3
C. 1, 2, 3, 
, 
, 
, 2
, 
, 3
D. 1, 2, 3, 4, 
, 
, 2
, 
, 
, 3
Find the indicated intercept(s) of the graph of the function.y-intercept of f(x) = 
A. (0, 4) B. (0, -12) C. (0, -3) D. none
Solve the problem.An elevator has 4 passengers and 8 floors. Find the probability that no 2 passengers get off on the same floor considering that it is equally likely that a person will get off at any floor.
A. 0.910 B. 0.610 C. 0.500 D. 0.410
Answer the question.If k < 0, what is the solution set of 
= k
A. {
}
B. (-?, ?)
C. {0}
D. ?