Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.21 qt = 
L
A. 22.3
B. 9.5
C. 19.9
D. 25.2
Answer: C
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A. x(x2 + 12) B. x2(1 + 12x) C. x(x + 12) D. No common factor
Solve the problem.Suppose the number of Quickie hamburgers (in millions) served yearly can be modeled by 
Approximate how many years it takes for the number of hamburgers served to reach 54 million. Round to the nearest year.
A. 1 yr B. 4 yr C. 3 yr D. 2 yr
Factor out the GCF from the polynomial.x9y5 - x9y4 + x7y2 - x6y2
A. x6y2(x2y3 - x2y2 + xy - 1) B. x5y2(x3y3 + x3y2 + x + 1) C. x6y2(x3y3 - x2y2 + x - 1) D. x6y2(x3y3 - x3y2 + x - 1)
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A. 810 B. 261,273,600 C. 1,814,400 D. 2520