Perform the indicated operation and express in lowest terms.
+ 
A. 
B. 
C. 
D. 
Answer: D
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What is the degree of the expression?(9 + 7x + 5x4)5
A. 20 B. 10 C. 15 D. 25
Solve the problem.Write an expression in simplest form that represents the area of the rectangle.
A. 10x2 - 8 B. 10x2 + 16x - 8 C. 10x2 - 16x - 8 D. 10x2 + 8
Suppose 
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
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?
The quantity dS/dx is called the marginal propensity to save.
?
For the consumption function 
, find the marginal propensity to save.
?
A. $0.43 billion/billion dollars
B. $0.286 billion/billion dollars
C. $0.68 billion/billion dollars
D. $0.337 billion/billion dollars
Graph.
- 
= 1
A. 
B. 
C. 
D. 