Factor.16x3 - 56x2 - 32x
A. 8(2x2 + 1)(x - 4)
B. x(2x + 1)(8x - 4)
C. 8x(2x + 1)(x - 4)
D. 8x(2x - 1)(x + 4)
Answer: C
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Use properties of exponents to simplify the expression. Express answer in exponential form.
A. 4-2 B. 4-15 C. 42 D. -48
Solve the problem.The polynomial 
gives the approximate total earnings of a company, in millions of dollars, where x = 0 corresponds to 1996, x = 1 corresponds to 1997, and so on. This model is valid for the years from 1996 to 2000. Determine the earnings for 1999.
A. $2.11 million B. $2.04 million C. $1.83 million D. $2.47 million
Fill in the blank with one of the words or phrases listed below.
In a 
, the numerator or denominator or both may contain fractions.
A. proportion B. rate C. complex fraction D. rational expression
Solve the problem.Score on a test S is related to the number of hours H studied for the test by the formula 
Solve for H in terms of S.
A. H = 8(S - 68)
B. H = 8(68 + S)
C. H = 
D. H = 