Factor the polynomial using the negative of the greatest common factor.-18a3b2 - 27ab
A. -9a(2a2b2 + 3b)
B. -9ab(2a2b + 3)
C. 9ab(-2a2b - 3)
D. -9ab(2a2b - 3)
Answer: B
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Solve the problem. Where appropriate, round to the nearest tenth of a percent.The graph below shows the number of internet host sites for five consecutive years. Find the percent increase in host sites from 2008 to 2009. Round to the nearest percent.
20082009201020112012Year
A. 0.8200% B. 1.0200% C. 102% D. 82%
Find the general equation of the orthogonal trajectories of the curves for the given equations.The curves y = c sin x
A. y2 + 2 ln 
= c
B. y2 = 2 ln 
+ c
C. y2 = 2 ln 
+ c
D. y2 = ln 
+ c
Determine whether the matrices are inverses.
, 
A. Yes B. No
Solve the problem.Assume that the profit P made when t units are sold, t > 0, is given by P(t) = t2 - 28t + 180. For what values of t will there be a loss (that is, P < 0)?
A. t > 0 B. 0 < t < 10 or t > 18 C. 10 < t < 18 D. t = 10 or t = 18