Factor completely. If the polynomial cannot be factored, say it is prime.12x3 + 8x2y - 15xy2 - 10y3
A. (4x2 + 5y2)(3x - 2y)
B. (12x2 - 5y2)(x + 2y)
C. (4x2 - 5y)(3x + 2y)
D. (4x2 - 5y2)(3x + 2y)
Answer: D
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Find the extreme values of the function subject to the given constraint.
A. Maximum: 36 at 
minimum: 0 at 
B. Maximum: 36 at 
minimum: -36 at 
C. Maximum: 26 at 
minimum: -26 at 
D. Maximum: 26 at 
minimum: 0 at 
Determine the end behavior of the graph of the function.
?
?
A. 
as
, and
as
B. 
as
, and
as
C. as, and as
D. 
as, and as
E. as, and as
Solve the problem.A certain electronic air cleaner is capable of filtering x liters of air per second and the percentage of the contaminants that are removed from the air may be calculated by 
where 
(i) Graph f in [0, 85, 5] by 
(ii) Use the intersection-of-graphs method to estimate the x-values where 75% to 90% of the pollutants are removed.
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A. 
75% to 90% are removed when
about 42 to 50 liters of air are
filtered.
B. 
75% to 90% are removed when
about 25 to 30 liters of air are
filtered.
C. 
75% to 90% are removed when
about 35 to 43 liters of air are
filtered.
D. 
75% to 90% are removed when
about 26 to 31 liters of air are
filtered.
Graph the system of inequalities.x2 + y2 ? 36-6x + 4y ? -24
A. 
B. 
C. 
D. 