Subtract the polynomials.Subtract (6x2 + 2) from (4x2 + 10x - 6).
A. 10x2 + 8x - 6
B. -2x2 + 10x - 8
C. -2x2 + 8x - 6
D. 10x2 + 10x - 4
Answer: B
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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.
Multiply. Simplify and leave the numerator and denominator in your answer in factored form.
? 
A. 
B. 
C. 
D. 
Multiply or divide as indicated.
? 
A. -12i B. 12i C. 12 D. -12
During a particular season Hank Aaron had 20 stolen bases. During the same season Roger Maris had 29 stolen bases. Which player had more stolen bases during that season?
A) Roger Maris B) Hank Aaron