With U.S. Census Bureau data, the Lorenz curves for the 2012 income distribution in the United States

Question:

With U.S. Census Bureau data, the Lorenz curves for the 2012 income in the United States for Black households and for Hispanic households (of any race) are given below. Find the Gini coefficient of income for both groups, and compare the of income for these groups. Black:
y=2.292x4-3.127x3+2.006x2-0.1710x+0.0005556
Hispanic:
y=1.830x4-2.564x3+1.806x2-0.1137x+0.0003512
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...