The following income distribution data define points on Lorenz curves, where x represents the fraction of a certain country's population and L(x) the cumulative percent of income held by fraction x. Use this data and a numerical method to evaluate 
and hence to find the Gini coefficient of income for this country in 1995 and 2003. Round your answers to three decimal places.
x
0.0
0.2
0.4
0.6
0.8
1.0
L(x) for Americans
1995
0
3.5
12.9
29.8
53.6
100
2003
0
2.1
11.1
26.2
52.5
100
?
A. ?
?
B. ?
?
C. ?
?
D. ?
?
E. ?
??
?
Answer: C
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A. 338 B. 364 C. 312 D. 286
Use an ordered pair to identify each point on the given coordinate plane. State the quadrant or axis where each point lies.
A. R(5, 4) in Quadrant I; S(-4, -3) in Quadrant III B. R(-6, -4) in Quadrant III; S(5, -4) in Quadrant IV C. R(5, -6) in Quadrant II; S(-4, -3) in Quadrant III D. R(-6, 5) in Quadrant II; S(-3, -4) in Quadrant III
Add.
A. 14,857 B. 13,757 C. 13,847 D. 14,747
Solve the equation.7 + 12x = 0
A. - 
B. - 
C. 
D. 