Find the product of the polynomials.(9y - 8)(81y2 + 72y + 64)
A. 729y3 + 576y2 - 512
B. 81y3 + 512
C. 729y3 + 512
D. 729y3 - 512
Answer: D
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Suppose C(x) measures an economy's personal consumption expenditure and x the personal income, both in billions of dollars. Then, 
measures the economy's savings corresponding to an income of x billion dollars. Then 
.
?
The quantity 
is called the marginal propensity to save.
?
For the consumption function 
find the marginal propensity to save. Round the answer to three decimal places, if necessary.
?
$__________ billion/billion dollars
Fill in the blank(s) with the appropriate word(s).
Factor out the GCF from the polynomial.14x4 - 4x3 + 10x2
A. 2x2(7x2 - 2x + 5) B. x2(14x2 - 4x + 10) C. 2x(7x3 - 2x2 + 5x) D. 2(7x4 - 2x3 + 5x2)
Which fraction appears in the partial fraction decomposition of 
?
?
A. 
B. 
C. 
D. 
E. 
Solve the problem.2 - 4x ? 22 and 4x - 3 ? 9
A. [3, ?) B. (-?, -5] ? [3, ?) C. (-5, 3) D. [-5, 3]